I am trying to not let my plan to loose weight become the big thing in my life; to that end I aim to eat things I like, just in smaller portions, and not having (too much) unhealthy snacks about the house. Actually, the way I usually do dinner during the week, reheating a box with a precooked meal from the freezer helps with that; I can simply make the portions smaller when I freeze them. The trick then is to not 'fill up' on snacks afterwards...