Today I realized that I hate life and now I'm constantly feeling guilty about it.
That seems normal, I think. Although could you tell me why you're constantly feeling guilty?
I blame myself for a lot of things.
Well, it seems to me that the first step is pretty clear here.  Stop doing things that make you feel guilty.  That should make the problem go away!
You think that is going to help me?
Yeah, if you don't do things that make you feel guilty then there's no way for you to feel guilt. Makes sense, doesn't it?