Whole, fresh (preferably organic foods) – vegetables, fruits, and grains – are the best diet. You will know the best diet for you if you put your love of God first. We can eat the same food and each of us will have a different reaction to that food. I know it’s hard, and it’s not much to go on, but make God your guide.
How do you make God your guide? Remember Him. When you eat, watch what happens. Instead of being captured by the desire to stuff as much food as is pleasurable for you (or as you can get in your mouth), eat consciously. Eat, knowing that you are acting out, as you are eating, something that has been taking place since the light first penetrated the darkness at Genesis. Watch.
If you’ll take care of yourself and be alert to yourself, you watch. The problem is, the appetites are stronger, aren’t they? Eat consciously. Watch what happens. If you’ll do that, you will know what you are supposed to eat. Raw is better. Organic is better. Eat as healthy as you possibly can — not for the sake of some image of yourself, but for the purpose of increasing your ability to be quiet and whole.