Healthy Eating-Keep it simple

I don't know why, but eating healthy is rather difficult for me.  However, I am more than ready to eat healthy and stay with it.  I have lost weight and I feel great about that. I eat too much of the bad stuff and not enough of the good stuff.  I also eat too much of the good stuff.  I realize that smaller portions is necessary to lose weight.  I need to control my eating.  I should not expect to eat a sandwich with a large bowl of cereal.  What the problem is, it's that I need to learn how to eat, and what to eat, and when to eat food.  I realized that food consumption has been allowed to control me.  I need help but I realize that small changes make a big difference.