How much is enough?

Ever felt like you were being pulled in a thousand different directions doing everything for other people, putting your happiness, health, hopes and dreams on hold to please other people? I've felt like that my whole life. I have a problem. I do everything to make my family happy. My friends too, yes, but mostly my family. I just don't know how to say no to people. My brother is the worst. My whole life I have looked up to him and wanted his approval. He's a very talented guy and is accomplishing his dreams. He does what he loves to do every day for work, is married and has a beautiful home and puppy. He has his share of issues, which I'm not disputing. His life is far from perfect, and I get that. However, he makes it his business to point out all of my issues in my life. He is so condescending and patronizing to me. He manipulates me to do what is best for him, and doesn't care how much it may hurt me. Or if he does, he doesn't show it. I have realized in the past 2 days that I'm really over it. I've been hurt too much by his careless ways. Everything he has done "for me" has had something that rewards him in the end. I know everyone is selfish to a degree, he just pushes the limit and crosses the line more than I think he'd ever admit. And I'm sick of it. I'm not 12 anymore, but I'm letting him push me around like we're kids fighting over the TV in the basement. Part of me really wants to just quit choir and only see him at family functions. I'm tired of being pushed around and that means I have to make a stand for myself. I need to stand up for what I believe and what I believe is that he has been a jerk to me for most of my life. I know this post is very whiny, but this is stemming from a recent experience. i.e. last night. So, perhaps I'll post later with something a little more insightful. For now, this will have to do.