So Hard

I feel bad for my wife and son. Its like I cannot provide for them. I feel bad ever time my wife has to stop breast feeding because someone from my family comes into the living room, which is where we are staying right now at my moms house, and wants to watch TV or get on the computer. It is not fair to her and my son. It makes me feel like I am not the best person for her. I know I give her and him more love than anybody else could, but the deserve so much more. That is the biggest problem my back  is causing. It is like i am going into depression over these issues. I stay up all night worrying about money and what to do. Any body else have this issue? Any thing you suggest to help with these feelings?