Gray_eyed_girl, recent research has shown that moderate fat diets may be better in the long run for some people than low fat or high fat diets. You might consider 25% up to 35% fat, while tracking total calories. I read about a study last year that showed that you could lose weight at the same rate by consuming 35% fat as well as 25% fat,
as long as the total calories were the same. However, those that chose 35% fat were more likely to stick to their diets long enough to reach their goals, and to keep the weight off later. This has been in the health news a few times over the last year, and it's been very interesting.
Generally speaking, it may not be the percentage of fat in your diet that affects your rate of weight loss, but the total calories you consume. By cutting back on fatty foods, you usually reduce the number of calories you consume, so that's the theory behind low fat diets. But if you count calories first, then you should consider the percentage of fat as a way of making sure that you eat a balanced diet. For example, if your fat intake is too high, you might be missing out on nutrient dense foods such as fruits and vegetables. Some fat is good, and it's also necessary to help our bodies function properly. You should also make sure the fat you choose is the right kind. Eliminate saturated fats, and make sure you avoid trans-fats like the plague

But some fats, like olive oil and fish oil, are good for our hearts, brains, skin, etc.
I used to be afraid of fat. I followed extreme diets like Ornish. Though I do think Dr. Ornish's plan is necessary for some people that have heart disease, and even I tried it because I have heart disease. It was extremely difficult to stick to, and isn't suitable for everyone. Over the years, I learned that fat isn't the enemy. It's the kind of fat we choose that makes the difference in our health, but it's the overall calories in vs calories out that makes the difference in our weight.
Regarding chocolate

look for the bags of Dove Dark chocolate in the small bite size pieces. Store them in the freezer, lol, unless you have willpower of steel! Chocolate is indeed good for us, but not any old chocolate will work. It must be at least 70% cocoa solids (dark chocolate) and it must be made from cocoa that still contains the flavoniods. Most of the chocolate in America is processed in a way that removes the flavoniods. Dove Dark, however, uses Cocoapro, which is the type that is good for us. Here's a good article on it from WebMD
http://my.webmd.com/content/article/88/99702.htm