I feel empty!!!!!!!!!!!!!!!!!!?

Quit 'bending over backwards' for them. Help them some, but that all the way. It'll give yourself satisfaction in the very least. And recognize your family probably won't all the sudden change and be all 'THANK YOU SO MUCH', realize that they are probably really greatful for you underneath it all. Helping them so much could also really help them in the future. Don't get all knotted up about it, chill, sit back, and do something for yourself too. =)