I hate myself because of my girlfriend
Do you think that is unhealthy to hate your self?
I know that, but I hate myself for being this way. She's the cause to all of it.
Find out the reason why she is like that and why you are like that. Talk it out with her before it becomes too serious and complicated.
I don't know, I have only myself to blame.
You can't blame and hate your self for how other people act. It might be better to break up with her and find someone who can respect you.