Home problems?

I'm 33 and I still leave at home. It's just my mother and I. I know i'm need to move out. I just can not afford it. I was even taking some college cles, but I have decide that college is not working out. I'm speending to much money on it that I should be using to pay some bills to move out. I've even trying to find anther job. I've had no luck. My problem is the only room in the house that I can have my own privacy is my room. The problem is that my mother doesn't repect my privacy she just knox on the door and thinks that she can walk in the room. She has the hole house thats her space and my room can't even be mine. I come home from work and I have to hear it she needs me to deposit money in the bank for her, write her checks for bill and sent them off. Then I have to listen to her compain about her bills and what's she going to pay and when. I'm just tired I have know where to go and I can't take it anymore. Talking to her about privacy doen't work done that may times.