Tips for Achieving Your Weight Loss Goal - write it all down. Keeping a record of everything you eat will put you on the fast track to weight loss. A study from the American Journal of Preventive Medicine found that keeping a food diary can double a person’s weight loss. The working principle behind writing things down is that it will help you become more mindful of your eating habits. And that mindfulness will lead to long-term behavior change. “Lose It” is the number 1 weight loss app for tracking calories & nutrition facts.