Rivenriver, maybe you dont want to lose weight!
I think women have this notion in their head that we should always be on a 'diet' or trying to lose weight....that we should feel bad about having a piece of cake or some chocolate.
If you're happy with yourself, then see that as a positive - cos it is one and there aren't enough people (especially women) who are!! Stuff what you think you SHOULD be thinking or doing! Exercise to keep your body healthy - eat plenty of fruit and veg to nourish your body, but if you want some chocolate - have it!!
If you don't know why you should lose weight, my thoughts are you don't need to!