4) It's good advice to know the difference between cheat food and junk food.

Cheat foods are those foods that don't belong in your everyday diet, but still have some redeeming qualities. Junk foods are those foods that don't belong in your diet at all, ever.

This tip is really a critical one: Understand the difference between ‘cheat' foods and ‘junk' foods. Cheat foods have some nutritional value, so although we shouldn't eat them every day it's not the end of the world if we enjoy them from time to time. Junk foods, on the other hand, give us absolutely no benefit whatsoever. Again, we want you to make small changes that you can stick with for life. You don't have to give up the occasional ‘cheat food' treat - just try to eliminate all the ‘junk food'.

For example, compare a slice of Pizza Hut pepperoni pizza with a Hershey's chocolate bar. Neither are what you'd consider healthy, and both have roughly the same number of calories. But with the pizza, at least you're getting some nutritional value because that delicious slice contains 11 grams of protein compared to just 3 grams in the candy bar. Cheat foods are not health foods, but at least they're not junk foods. Choose wisely.