Your diet is too regimented: The average American gets bored eating the same thing day after day. Plus, according to one study, dieters who gave up their favorite food ultimately ended up overeating later.
You go low fat: Your body needs fat to function properly and helps us feel full. Also, a lot of low-fat foods use tons of sugar to add flavor, which can wreak just as much--if not more--havoc on your waistline. (Related: 14 Low-Fat Foods That Make You Fat)
You skip meals: You may think you're saving yourself calories, but in reality you're setting yourself up to overindulge later in the day.
You do cardio without weight training: The more muscle you build, the more calories you burn, according to research published in the Journal of Strength and Conditioning Research.
Your diet requires you to buy pre-packaged meals: Having to rely on these meals don’t teach you how to eat in social situations.
Read on for 10 more signs your diet may fail.