Know your motivation. I have a friend, Jerry, who is getting healthy so that he’ll be alive and well to see his 3-year-old son grow up. When he gets tempted by evil junk food, he asks himself whether he’d rather eat the sweets or see his son grow up. When you have a powerful motivation like this, and remember what choice you’re making whenever you face temptation, it’s easier to be strong when you’d otherwise cave in.
Take it in gradual steps. You don’t have to overhaul your diet overnight. I highly recommend changing your diet in small steps — just drink water instead of soda, for example, or eat fruit instead of candy or chips. Once you adjust to this small change, make another a week or two later, and so on until you’re eating much healthier a few months later. This small and gradual process makes it much easier to stick with a healthy diet.
Don’t be drastic. I’ve seen fad diets like the Cookie Diet, Atkins, the Banana Diet, and different cleansing fasts — and I don’t recommend a single one of them. They’re drastic, and very few people can last with them for a long time. And the fact is, while you might lose a lot of weight with a drastic diet in a short amount of time, as soon as you get off the diet and go back to eating unhealthily, you’ll gain the wait back. Don’t do anything drastic — make long-lasting changes.