I learned that most often it's not what you say, it's how you say it. Similarly, often it's not just what you eat, it's how you eat it. Drop the fork. Break the trance. Slow down. Bring some consciousness to what too often is merely an animal behavior. Eating slowly allows the stretch response in your stomach wall to let you know that you are full before you overeat. Then there are things which just don't taste good enough to eat slowly. It only tastes good while it's in your mouth. You'll get more enjoyment the more you chew, and chewing more is a good idea anyway. Modify your habits. Re-pattern.
Eat less. Americans eat too much. Get out of that habit. Enjoy what you are up to so much that you forget to eat. Get used to being hungry. The Viet-Cong ate only a single ball of rice a day and they won the war. Even at meals keep one-fifth to one-third of your stomach empty.
If you must eat sweets, eat small portions. It still may be a stress, but your body knows how to deal with a mild rise in blood sugar that a little bit of sweets causes. Doubling the amount of cookies you eat in one sitting may send your blood sugar out of normal physiological range. Your body responds in a panic, dropping huge amounts of insulin which crashes your blood sugar level causing other emergency mechanisms to kick in. Waiting 10-15 minutes before having that second round of cookies prevents this metabolically stressful scenario, as do kiddie portions of ice cream; hey, the first bites are always the best; stop when it starts going down in a gob; put it in a tea cup in the freezer for later. Besides if you wait 10-15 minutes you'll have broken the trance and probably won't "need" those extra cookies anyway. Fruit, as it contributes nutrition, is better than refined sweets which are "empty calories" requiring nourishment to digest them. Still, eat it slowly.
Avoid soda. It's liquid candy. Fruit juice and seltzer is a great, tastier substitute. (Then, later avoid carbonation.)
Less refinement is better than more. Try to eat as close to the natural state as possible; raw is better than cooked, steamed is better than fried, organic is better than chemically treated. If you are eating non-organic fruit and veggies, wash them in a very dilute solution of natural castile soap and rinse well. Pesticides are designed not to come off in the rain, so water alone doesn't get them off. (There are commercial washes sold for this purpose in the healthfood store.) Try soaking nuts and seeds overnight to activate their enzyme systems, turning them into "live foods." They make an excellent live, raw pate blended in a food processor with herbs, spices and veggies or fruit.
If you must eat meat and dairy, please use them in small portions, as condiments (e.g., in the stir-fry, on the burrito) rather than as main courses.
Coffee acidifies the body, robbing the bones of calcium, leading to osteoporosis. Coffee has roasted hydrocarbons, like charbroiled meat, which cause cancer. Coffee has other nasty things in it besides caffeine like theobromine. It's a drug, a socially-acceptable drug. The drug for our go-go society. Switch to green tea. At least it has health benefits associated with it.
Juicing is a great way to get concentrated nutrition. Juice is a super food. ProGreens is my favorite store-bought super food.
Don't each much salt. Find herbs and spices to use instead of or in addition to salt. Change the salt habit.