Originally Posted by Max
-Not drinking my calories. A pound of fat has 3500 calories. A can of coke has 190. If you normally drink 2 a day, that's 380 calories. If you cut that out of your diet and keep your activity level the same, you'll lose a pound in 10 days. Awesome. Pass the Fiji water.
+1 as a way to jump start your effort. Obviously water is much better than diet soda, but even if you make the transition gradually by first switching from regular to diet soda, for example, you'll find you're cutting out a significant number of calories.
As Max points out and you have observed, things like portion control and not eating between meals can be part of it, too. But those things take significant willpower and long-term dedication. By changing the types of foods you eat, you'll make great progress even if you're less than perfect -- and of course you'll be less than perfect -- in the other areas. I'm sure you can easily cut 500 calories a day out of your diet through simple food substitutions that won't even leave you feeling like you're "dieting". 500 calories a day is 3500 a week, which is about a pound a week. Add in some moderate exercise and whatever portion control, etc. you're able to maintain, and you'll start seeing tangible results before you know it. And in my experience seeing those tangible results gives you real encouragement that makes continuing and stepping up your efforts easier.
Besides, as others have noted, it's less about dieting than about changing your eating habits for the rest of your life. Diets -- and usually their results -- are temporary. Changes in habit and can be permanent and highly rewarding.
Congrats on your initial commitment, and good luck with the process.