I suppose the only advice I can give is the following:

• Eat a balanced diet with plenty of vitamins and minerals (I suggest research on this)
  
• Exercise daily for at least 30 minutes, but don't over-do it
  
• Drink a substantial amount of fluids (MAINLY WATER)

  As for eating itself:
  

• Eat only when you are hungry
  
• Eat periodically
  
• Eat Consciously
  
• When you are full, stop
  

If you need anymore help, feel free to ask.

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Me no like book, book is stupid