I, too, take long, hot showers, which is very bad for my dry skin but very good for my migraines. It helps a lot. I drink diet soda, but I neither smoke nor drink alcohol. So I have a lot of tradeoffs.
Ditto.
I suppose chocolate should make this list, too. As well as not getting enough sleep, giving in to cravings, and generally over thinking/analyzing everything… The last one will probably kill me before any of the others. 
When you finish that half marathon, you just have to whip out a pack and light up. Or light up 200 metres from the end and come across the line waving and grinning, a cig stuck jauntily into the corner of your mouth.
As for the chocolate lovers, just make it very dark (90% if possible). It’s good for you!
Drink booze, gamble, generally give in to temptation.
Talking about problems and issues at work despite having idiot bosses (in several places I’ve worked) that consider such things ‘disloyalty’ or ‘telling (them) how to do (their) job’.
You know, there are two ways to look at this;
1> Either you can consider that you’re not perfect and all knowing and take such things as areas for improvement.
2> Or you can think that the people beneath you are inferior morons who are attacking you by pointing out your flaws.
Like others in this thread, eating sugar is mine. It makes fat and even worse, I seem to have more fatigue after ingesting sugar (I’m fighting chronic fatigue syndrome) and even knowing that I have a hard time staying away.
I drink coffee constantly. I’m breastfeeding. I’m told that this has no negative effects on babies, but it drives my husband nuts and I should probably not do it just in case, but dammit - I’ve got a preschooler and a baby! How the hell else am I supposed to stay awake?
That said… I stay up waaaay to late at night. It has nothing to do with the caffeine. I’m exhausted. But I stay up because I can and it’s the only time I get to be conscious and not doing anything productive all at the same time.
I allow myself to feel deficient, even when I know I’m not. Luckily this isn’t something that spills into my personal life, but it’s definitely a luxury and I need to stop.
When I’m in overeating mode, I know exactly what I’m doing and I don’t bother to stop myself anyway. Luckily my weight-loss mode has so far outstripped my binge mode, so I’m still losing weight.
I drink two 32 oz. soft drinks or tea during the day. Then at dinner I’ll have a small glass of tea. Also have a sweet tooth. So I’m sure my sugar & caffeine intake are too high. I am not much overweight (topless pic in the SDMB picture forum) and my blood sugar is within the normal range.
Also, for most of the last 4 years, I’ve carried on an extra-marital relationship with various women. So far, no negative consequences there, either.
Hate to break it to you, but you’re also addicted to commas.
I didn’t know long showers were bad for you. I never take one that is less than 20 minutes.
I get 4-5 hours a sleep on the 4 nights that I have to work the next morning. I make up for it on the weekends, which is supposed to be bad too since it upsets the sleep patter.
It might also be hard on your relationships - my husband does that, sort of (short on sleep every night during the work week), and he gets grouchier and grouchier every day, then back to normal by Sunday (IF he can sleep in, which baseball meetings on the weekend don’t always allow).
I bite my nails. I have my whole life. I hate the feeling I get when they’re too long, like there’s something stuck underneath them. I have tried to quit, but now my nails are just shot. They bend and break and splinter.
I drank a SHITLOAD of coffee while I was breastfeeding. (I mean, I drink a shitload of coffee all the time; I didn’t specially start while breastfeeding or anything.) And my kids all slept like angels, more or less.
I do this too.
And both of these. Are you me?
The only time I notice it bothering me is when I only get an hour or 2 of sleep for a couple of days. For some reason, it makes me very emotional inside my head. I don’t show it, but things that normally don’t bother me start to really bother me.
I do get grouchy when I sit down to watch a new epsisode of something and then wake up as the end credits are rolling. 
About once a week, I stay up until about 3 or 3:30 in the morning drinking wine, reading, watching TV, and/or surfing the internet for porn. Why? While I’m doing it, I like being awake. Part of me doesn’t want to end the day, because when I do, I’ll just wake up and have to go to work the next day. As it is, I have to force myself to go to bed at 3:30; if I had my druthers I’d stay up all night. The next day at work I’m sleepy, but generally OK. But if I’m driving home (southwesterly) the afternoon after one of those nights, and the sun is setting in my front windshield, it’s like I just mainlined an Ambien, and forcing myself to stay awake until I get home is torture.
I eat too much sugar. Sadly for me, pretty well ANY refined sugar is too much - I have a big ol’ Type II Diabetes bullseye on my back so I should avoid all of it but when someone offers up some Jelly Bellys - well, lets just say I don’t turn them down.
However, in my defence I don’t buy that type of thing - just wind up finding it at other peoples’ houses.
I totally do this too! I know I’m overeating but I just can’t help my damn self. Fortunately, I eat really well 95% of the time and get a lot of exercise, so it pretty much balances itself out.
It’s the two steps forward one step back method. As you can see, it is not the quickest or most painless way.
yeah, I suck.
I smoke. Every time I light up I get a flutter of anxiety through my belly because I know it’s not good - but I still do it… I’m down to 7/day though. I also chew the insides of my cheeks non-stop. They are torn up something terrible. It files my teeth down and gives me a headache. Do I stop? No.
Oh yeah, I take a prescription painkiller every day because it helps with my depression (it’s non-narcotic) but still, probably not recommended for the long-term. It’s the only thing I’ve ever used that has improved my depression and anxiety symptoms, so no, not quitting that either.
Jeez-Louise. I sound like a wreck! I’m really not, I just have, um, some unresolved mood issues…:eek:
Drink too much alcohol.
Eat too much bad stuff.
Too much time on the internet.
Too much avoiding social interaction.
Not enough exercise in the winter.
Poor sleep habits.
I did quit smoking though, gonna stick this time, I believe.