Ok here are some of mine!
1a) Learn as much as you can! I constantly do research on nutrition and fitness. The biggest eye-opener for me was Jillian Michael's
Master Your Metabolism. It's really scary what certain foods do to your body. Basically, I dedicate a lot of my free time to "independant study" ...mostly on food/nutrition...but also on exercise/fitness. I find that it keeps me focused and on track.
1b) Going by what I've learned, I make a conscious choice to avoid A) Trans fats (On food labels, these are called partially hydrogenated oils) B) High Fructose Corn Syrup and C) Bleached flour. There are a few other ingredients that I also try to avoid (mono/diglycerides and the like) but those three are my biggest no-no's. As a rule, I try to live as organic as my budget and taste buds will allow. This is BIG for me, and I hope I can raise a little awareness about these ingredients just by posting this here.
2) Moderation NOT elimination. I have a weekly cheat day... or at the very least, one higher calorie day a week. Additionally, I don't cut anything out 100%. If I crave McDonalds, I get like a kids meal. If I crave chocolate, I eat chocolate. etc etc ... I will never fight off a craving because that has spelled disaster for me in the past.
3) Don't stock up! I'm at the grocery store several times a week. It's bananas, and I hate it - but I do it. Why? Because I'm a binger by nature... if I keep too much food around, I *will* eat it whether I'm hungry or not. So I usually only buy enough food to last me 3 or 4 days, then I go out and get more.
4) Calorie awareness...not counting. I don't know how many people this will help, because I know many people are pretty dedicated to calorie-counting, but for me, it becomes obessive after awhile. I read the label of every single food I put in my mouth. I know how many calories are in them... but I really only count it all up maybe once in a week, just to make sure I'm on track. I can kind of guesstimate the rest of the time how much I'm eating, and my body is so used to eating the way I do now, that I can usually just listen to it (eat when I'm hungry, don't when I'm not) and get my calorie intake right on target. If I count calories every day, I get crazy and frustrated, and that's never good.
5) Keep things interesting. This goes along with #1. I'm always researching new food I can eat, and new exercises I can do. You don't want your diet to get boring, because that's when you revert to old habits. (in my experiences) Additionally, you don't want to fall into an exercise rut either because 1) You will get bored and 2) YOUR BODY will get bored. aka, it will adapt and won't be as effective.
6) Always look at the positives, not the negatives. If you ate something you didn't want to eat one day, be proud that you maybe walked on the treadmill for a half an hour. Ok, you didn't lose as much weight as you wanted this week...but you're still x amount closer to your goal. Never EVER put yourself down... we all have bad days, but look at all accomplishments you've made so far rather than focusing on that one "slip-up".
I may add more eventually...but those are biggies for me. (: