I think the KEY to healthy eating is being prepared.. If you prep and prepare your food then when you are hungry you wouldn't just grab anything that is not healthy. If your fruits and veggies are all cut up.. You will tend to grab it since its all nicely wash and cut up.
When I get home from the grocery store.. I would fill a sink up with water and take all of my veggies and fruits and wash them.. Dry them.. THEN store them in a nice little container ;)