I'm pretty sure I hate myself
Why do you think you hate yourself?
I have some pretty sad stories you don't want to know. I wish I was never born
Hating yourself is unfortunate and I hope you can work to change the things that are making you feel so negatively about yourself. Striving to value yourself more is crucial and I would suggest talking to a professional who can help you address these issues.
I don't think I can change.
Many people who are just starting off getting healthy feel the same way!  I think once you find a professional to talk to you'll see that anyone is capable of change if they really want it!