Eating in moderation

Yep, I have not done a good job of eating in moderation or laying off of the health foods.  I admit that food is a big weakness of mine and that is why this plateau I am on is a major struggle.  I have little understanding of the importance of eating in moderation.  It is because I have no idea how to eat in moderation enough.  What is the purpose of eating in moderation?  What does it mean to eat in moderation?  How do I eat in moderation?  I want to be healthy and whole, but first I must answers to these questions.