Diets don't work - Going on a diet means altering your eating habits temporarily. Yes, you lose weight and then you go back to your previous life and gain it all back.
Fanaticism isn't healthy - I don't want to get obsessive about this, I think that if you want to have an ice cream sundae sometime, you should have it. The trick is to make it a special treat and not have one every night. My personal weakness is potato chips, I could eat the whole bag, so I don't buy them. I save them for parties or holidays and then eat what I want.
Moderation in all things - This is similar to the fanaticism statement but I want to remember to keep balance in my life. An equilibrium of common sense that includes movement (not exercise per say) and rest, food intake variety that includes all the best categories: nuts, fruits, vegetables and grains, emotional tranquility, occasional treats, and a good even split between work and play.
Movement - A resolve to get out of the chair (I write a lot) and move. To keep up a certain amount of physical movement every day to help burn calories and improve muscle tone.