How about -
Whether you think you can or can't, you are right.
I can't remember who said it but I know that I've always applied that to every other challenge in my life and never thought to apply it to weight loss, maybe because I didn't want to???, until I read these posts. So thanks for the inspiration!
All your life you are told the things you cannot do. All your life they will say you’re not good enough or strong enough or talented enough; they will say you’re the wrong height or the wrong weight or the wrong type to play this or be this or achieve this. THEY WILL TELL YOU NO, a thousand times no, until all the no’s become meaningless. All your life they will tell you no, quite firmly and very quickly, AND YOU WILL THEM YES!” NIKE