50 Bad Habits Examples (and Exactly What to Replace Each One With)

Some common bad habits are procrastinating, doomscrolling, snacking out of boredom, staying up too late and overspending. A bad habit is a repeated behavior that runs on autopilot and works against your health, time, money or relationships. Everyone has a few.

If you keep promising yourself you'll stop scrolling at midnight or stop putting things off until Sunday night, the problem probably isn't willpower. It's the setup.

Below you'll find the 10 that show up most often, 50 examples of bad habits sorted by area of life with a replacement for each, and a 5-step method to break the one that costs you most.

What is a bad habit (and when is it more than a habit)?

Bad habits stick because they pay you right away (distraction, comfort, a break) and bill you later. In their 2016 review of the psychology of habit, Wendy Wood and Dennis Rünger describe habits as responses that a familiar context triggers on its own, and that keep running even after your goals change. That's the habit loop in short: a cue launches a routine, and a reward keeps it coming back.

Some habits cross a line. The National Institute on Drug Abuse describes addiction as compulsive seeking and use that continues despite harmful consequences. Watch for three signs: you can't stop even though it hurts you, you get withdrawal symptoms when you try, or it's disrupting your work, health or relationships. If you see any of them, it may be more than a habit, and a swap list isn't the fix.

The 10 most common bad habits

These 10 bad habits come up again and again in everyday life. It's our selection, in no particular order. There's no reliable ranking of the bad habits people have, so treat this as a checklist, not a league table. Recognizing three or four is normal.

1. Procrastinating. The task doesn't get easier while you wait, but the stress grows.
2. Doomscrolling and too much screen time. A few minutes turns into an hour, and you rarely feel better after.
3. Staying up late and sleeping poorly. Short sleep makes the next day harder, and a tired day is when other bad habits tend to creep in.
4. Snacking out of boredom or stress. You eat without hunger, so it never quite satisfies the feeling that started it.
5. Sitting all day and skipping workouts. Hours in a chair add up, and a skipped workout is easier to skip again tomorrow.
6. Overspending and impulse buying. Small buys feel harmless alone, then add up on the statement.
7. Smoking or vaping. It's the habit with the clearest health cost on this list, and nicotine makes it hard to stop.
8. Negative self-talk. Calling yourself lazy or useless doesn't motivate you; it makes the next attempt feel pointless.
9. Multitasking. Switching between tasks feels busy, but part of your attention stays stuck on the last one.
10. Nail biting and other nervous habits. They happen without you noticing, and they can damage your nails and skin.

50 bad habits examples by category (and what to replace each with)

Here's the full list of bad habits by category: 50 bad habit examples, each with a better habit to replace it. We sort them into seven types: health and body, sleep and evenings, digital and screen habits, work and productivity, money, mind and emotions, and social and nervous habits.

Each table shows the need behind the habit and a start-small version you could try tomorrow. The need matters most: a replacement only lasts if it meets the same one. If you'd rather start from the positive side, our list of good habits examples organized by life area works the other way around.

Health and body

The WHO's 2020 guidelines on physical activity recommend 150 to 300 minutes of moderate activity a week for adults, and less time sitting. They also say some activity is better than none, so small swaps count.

For smoking, vaping and drinking, a swap is support, not treatment. If you've tried to stop and can't, talk to a doctor.

Sleep and evenings

Adults need 7 or more hours of sleep a night, according to a 2015 consensus statement from the American Academy of Sleep Medicine and Sleep Research Society. Staying up for no good reason has a research name: in a 2014 survey of 177 people, Floor Kroese and colleagues found that this "bedtime procrastination" was linked to self-reported insufficient sleep, even after accounting for general self-control. Online it's called revenge bedtime procrastination.

Caffeine is sneakier. In a 2013 study by Christopher Drake and colleagues, 400 mg of caffeine (a large dose) taken even 6 hours before bed cut the 12 participants' measured sleep by more than an hour.

Digital and screen habits

Screen habits are the habit loop at its purest: the phone is always within reach, any pause is a cue, and the reward is a small surprise. So most swaps below change what's within reach.

Work and productivity

Procrastination is often about mood, not laziness. In a 2013 review, Fuschia Sirois and Timothy Pychyl argue that people put tasks off to feel better right now, at the expense of their future self. Our suggestion: make starting feel less bad with a tiny first step.

Multitasking has a hidden cost. In a 2009 paper, Sophie Leroy showed that part of your attention stays on the task you just left, which she called attention residue.

Money

Money habits hide because each purchase is small. Put a delay or a regular check between you and the buy, rather than banning treats.

Mind and emotions

Thinking habits often drive the others: stress and low mood are common cues for snacking, scrolling and spending. A short breathing practice is a good replacement. In a 2023 randomized trial by Melis Yilmaz Balban and colleagues, five minutes a day of cyclic sighing (slow breathing with long exhales) improved mood more than the same time of mindfulness meditation over one month.

Social and nervous habits

Social habits usually protect something: belonging, your point, your energy. The swaps below keep the need and drop the cost.

Nervous habits have one of the best-studied fixes on this list. In 1973, Nathan Azrin and Gregory Nunn introduced habit reversal: you learn to notice the habit and do a competing action instead. Their first report covered 12 clients with habits such as nail biting and thumb sucking. A 2011 meta-analysis by Karina Bate and colleagues pooled 18 studies with 575 participants and found habit reversal effective.

If picking or biting is severe or distressing (a body-focused repetitive behavior), a therapist trained in this method can help.

What is the worst habit to have?

For your health, smoking is the most harmful habit on this list. The CDC calls cigarette smoking the leading preventable cause of disease, disability and death in the United States, and cigarette smoking and secondhand smoke cause more than 480,000 deaths a year there.

For most people, though, the worst habit is the one that drags the others down with it. Poor sleep and procrastination are the usual suspects (that's our read, not a ranking from research): a short night can make snacking, scrolling and skipped workouts harder to resist, and a task you avoid keeps stress high all week.

So rank your own. Score each bad habit on its cost to your health, time, money and relationships, and on how hard it would be to stop. Then place it in this grid.

The high-impact, easy-to-stop box is your first project: an early win proves the method works before you take on a hard one.

Why bad habits are so hard to break

Willpower alone rarely works against a habit. You can resist a cue once, but it comes back tomorrow, and each time the old reward is one tap or one bite away. Your brain learns from the reward that arrives right away, not from the cost that shows up next month.

And old habits don't vanish. NIH News in Health explains that replacing a habit doesn't erase the original behavior: both stay in your brain. That's why a stressful week can bring back a habit you thought was gone. Its advice is to actively replace unhealthy routines with healthy ones, and to get friends, coworkers and family on board.

James Clear, author of Atomic Habits, makes the same case: bad habits meet real needs in your life, so it's better to replace them with a healthier behavior that meets the same need than to simply ban them. Our Atomic Habits cheat sheet explains how he turns the habit loop around to make bad habits invisible, unattractive, difficult and unsatisfying.

How to break a bad habit in 5 steps

1. Pick one habit

   Choose one from the high-impact, easy-to-stop box. One habit gets all your attention; changing five at once splits it. If you're tempted by an all-in reset, see easier alternatives to 75 Hard first.

2. Note the cue for one week

   Don't change anything yet. Each time the habit happens, make a quick note: where you were, what time it was, who was there and what you felt just before. Look for the one or two cues that come up most.

3. Choose a replacement that meets the same need

   Find the need in the tables above and pick a swap that serves it. Then tie it to the cue with an if-then plan: "When I get into bed, I read ten pages." In three experiments published in 2011, Marieke Adriaanse, Peter Gollwitzer and colleagues found that if-then plans like this took away the head start an old habit normally has when its cue appears.

4. Make the old habit harder and the new one easier

   Add steps between you and the bad habit, and remove them from the good one: phone on the charger in the hallway, book on your pillow, snacks on a high shelf. The easiest path should lead to the replacement.

5. Count your days and plan for slips

   Count the days you do the replacement, and decide now what you'll do after a slip. One slip isn't failure. A useful rule of thumb from James Clear (not a research finding) is never miss twice: restart at the very next cue, not next Monday.

If the habit you picked lives on your phone, Greatr helps with steps 3 to 5 in one setup. You put your replacement, such as reading, breathing or journaling, into a morning or evening routine. The apps you choose stay locked until you finish it, and Greatr counts every day you show up. Otto, the app's guide, has one line for the moment the urge hits:

You do not need to fight the urge. Finish one small habit first, and then decide.

Cold turkey or replace it?

Replace it when the behavior can't leave your life, like eating, spending or using your phone. For smoking, both routes can work, with medical support.

A 2019 Cochrane review by Nicola Lindson and colleagues pooled the trials and found that neither cutting down first nor quitting abruptly led to clearly better long-term quit rates.

Our suggestion: quit the substance with a doctor's support, and still replace the moment, so a walk or a breathing break fills the slot the cigarette used to take.

How long does it take to break a bad habit?

There's no reliable number: research measures how long new habits take to form, not how long old ones take to fade. In a 2010 study by Phillippa Lally and colleagues, 96 volunteers repeated one new daily behavior for 12 weeks. Among those whose data could be modeled, the median time to reach their automaticity plateau was 66 days, with estimates from 18 to 254 days (the longest ones projected beyond the study's end).

Missing one day didn't derail the process. The 66 days is a median, not a promise. Expect weeks to months for a replacement to take over, and expect the old pull to return when old cues do.

Start with one swap tonight

Don't try to fix the whole list. Pick one bad habit that is high impact and easy to stop, find its row in the tables above, and do the start-small version tonight. Note the cue when it shows up. If you use Greatr, add the new habit to your evening routine, so every day you show up gets counted.

If it's the first week of January and you're planning to quit three things at once, read why most New Year's resolutions fail first. Then come back and choose one.