I've come to the conclusion that the easiest way to:
1) Know what diet works best for me
2) Stick to that diet
3) Get enough food on that diet
...is to be able to cook. For me really its not the "easiest way" really but an absolute necessity.
And I don't mean the typical "Dad's famous chili" a couple of times a month plus burgers for an encore. I mean all-out breakfast, lunch and dinner, with plenty of meals-ready-for-emergency in the fridge and 2-3 lunches/day 7 days/week. Plus feeding the entire family, and hitting the middle ground between telling the kids, "You'll eat gruel and like it!" and giving them whatever they want.
Anybody else do much cooking?
This is purely semantics, but I found it helpful to follow the advice of looking at it as lifestyle, rather than a diet. I'm sure that this is what you meant, but it still helps to visualize that.
Food intake makeover has been the centerpiece of the last two months and I'm having really nice results (about twice faster than expected). Cooking, in turn, has been the centerpiece of food intake.
I'm not trying to be captain obvious. But it's amazing how without reinventing the wheel, you can achieve really good results if you actually believe in a new lifestyle.
Stuward phrased it really well: <memory citation> "if it has a label, it is most likely not food. Food lives in the produce isle." Obviously it has to be applied reasonably. He also said, "if it has a label make sure you understand how it's made. You squeeze olives to make olive oil; for canola oil, you need a chemistry degree"
As you can see, people on this site played their own role. Other than clinical studies I pretty much don't read anything else for the sake of efficient time utilization.