Mizfit, seems to me that you have turned a corner, a lot of mental illness is shown through being particularly insular, i.e. Being happy staying in your room at your parents house, comfort eating as you feel no confidence in being able to lose weight. Look to the positives. You've managed to lose 3 stone, if you've done it once, you can do it again. Your sister moving in with her boyfriend is a good thing, assuming you get on ok with them both, it's an extra place for you to spend time away from your parents. Also, as already mentioned perhaps you could look at a new rental with your girlfriend? Would ease the burden on her & hopefully you could get yourselves into the situation where you could jointly save more? Good luck, and well done on the 3st loss, I could do with hitting those heights!