i've been fat since i was a kid, have tried all the diets, some with results but i end up the same or worst sometimes i even gain more weight, i walk a lot but that doesnt seem to work for me
regards
This may be your problem. "Dieting" IMHO is not the way to go. You need to take a step back, evaluate your diet, change it accordingly, and add in some resistance training. Walking will help too, but if you really want to lose weight you have to make a commitment to eat well and excercise. I am in no way an expert, but I do consider myself to be somewhat knowledgable in the fields of fitness and nutrition, especially the basics. Exodus is right though, it would help to learn more about you...
one of the first things you would want to do is start hitting the weigths, more len muscle mass means more calories burned. And just like X said we need to know a lot more before we can really help