There's more than one way, and in the end you want things that you can sustain over the long hall.
Goals: small meals every 3-4 hrs, no skipping meals, make colorful veggies the main part of each meal, use lean meats & protein
sources, avoid fast food & soda, greatly limit juice, drink mostly water, eat fish 2-3x/wk, and exercise
5x/wk. Try starting with 1 thing & gradually add others.