In my case it seems that the problem is a combination of stomach capacity and the desire to taste all those lovely things. What works for me is to keep myself

In my case it seems that the problem is a combination of stomach capacity and the desire to taste all those lovely things. What works for me is to keep myself occupied, to insist on eating only things that I really want because of the taste, and to eat little at a time but more often. My GP concurs and claims that restricting one's intake by having several small meals instead of one large one results in the stomach effectively shrinking so that over time you find yourself feeling full after a relatively small meal. When I am at home I use a smaller plate at dinner than the rest of my family so that I just can't pile as much on. After nearly a decade of this the result is that I simply cannot eat the same amounts as I used without feeling uncomfortable, so I don't.