Family and friends help determine your long-term dieting success, either through their support or lack thereof. Since they're the ones you spend time with on your days off, they can greatly affect how you eat when you're outside your normal routine. Weekends and holidays are full of new temptations, and the people closest to you may persuade you to eat more than you want.

Dive into your relaxation time with gusto — but try to focus less on food and more on active fun. The more confident you feel about adapting your diet to new social situations, the better your chances of success.