A successful diet change requires time and patience: It won’t happen overnight.
Step 1: Keep a food diary to assess your current diet, and to see where you can make changes.
Step 2: Research the various different diets and decide on one. To start with, do not combine two or more diets.
Step 3: Train your diet and integrate it into your life, so that you stick to it long term.
Step 4: Resist temptation! The occasional cheat day is ok, but try to resort to your old eating habits as little as possible.
Step 5: Review your succeses and use them to motivate yourself to keep on eating healthily.