Poor me, poor me, pour me another

I don't know why I feel the way I feel, I just do.  I was doing so well.  As I've said before I am bipolar with more emphasis on the depressive side.
So, I've been depressed.  I loathe myself for it because there are so many people worse off than me.  I have tears in my eyes right now.  I'm so angry with myself.
My leg just doesn't wanna work right, found out yesterday it had a faulty valve.  They thought they fixed the problem, but by the time I got home, it was acting up again.
Don't walk on it much because it is so uncomfortable.  Now my wheelchair is falling apart and I'm having trouble getting a new one.  I spend a lot of time in it.
All I do is watch TV and eat.  I make myself sick with disgust.  Sorry to yammer.