How much sugar do you have a day?
There are two ways to tackle this:
The first is to control unknown sugar intake and to change eating habits:
Sugar is almost impossible to avoid if you eat a lot of processed foods (and I mean things like soft bread, canned foods, sauces and dips, yogurts). Even so called healthy stuff is full of sugar. Fruit juice included.
It's actually quite a hard habit to kick as your brain responds to sugar in the same way it would do to cocaine- so it's impossible to go cold turkey.
Check the back of any processed food you buy for any added sugar and avoid it if you can. If you add sugar to your own food then you can control your consumption.
The second way would be "reintroduction" technique Penn Jillete used.
This is where you CUT OUT ALL FOODS except one (and you can choose whatever you want) and eat only that thing for two weeks, without salt, butter, anything, and then gradually re-introduce different foods to your diet. It allows your body and brain to reset its taste-buds and form new habits.
*"Anyone I know who’s able to do moderation I don’t like them. The people I respect and love are people that go wild. It turns out everything about eating is habit. It’s all habitual. You think you have a natural inclination to like grilled cheese or donuts. Not true.
So I wanted to take a couple of weeks and change my habit. And one of the really good ways to do that that worked tremendously for me is what’s called the mono diet which is just what you think from the root, eating the exact same thing. And I could have chosen anythingI could have chosen corn or beans or whatever. Not hot fudge but anything. And I chose potatoes because it’s a funny thing and a funny word. For two weeks I ate potatoes, complete potatoes – skin and everything and nothing added, nothing subtracted."*
It's a really interesting story he lost a shed loads of weight and doesn't have cravings anymore: