I keep dieting properly, doing cardio and wheights, and getting to 19 stone, and then i cant lose any more wheight. I just stop, even though im excersising hard than ever, and pushing more wheight !?

So i stop dieting and end up like now putting all my fat back on again and now im back to 22 stone (was 22 stone 9lb a few weeks ago, but have managed to keep the 9lb off).

I dont understand why it can go perfectly upto a certain wheight and then just stop.... but every time it happens i feel so depressed etc that i just let it pile back on!

I dont see that its a lack of motivation as im still dieting and excersising so surely i should still be dropping wheight ?

Im 6ft 8, 22 stone and my bodyfat ratio thingy is 36%, ideally id like it to be around 15%, when i drop down to 19 stone however it only goes down a little bit!!!