1. Thinking short-term
2. Going on a celebrity diet
3. Deluding yourself about what you've eaten
4. Not including exercise in your regime
5. Banning certain foods
6. Skipping meals
7. Thinking healthy food is always low calorie food
8. 'Going large' on portions
9. Forgetting drinks contain calories too
10. Weighing yourself too often

via womenfitness