Help?

Recently I've been fighting with a person very close to me. I've thought now twice that I would have been better off dead for her. I feel as though if's my job to make sure she's happy and she isn't and I feel awful about it. I need help on how to clear my head. It's a-buzz with thoguhts that I am unable to get out (due to brain crack maybe). It's been a year, will be two years in November, since I felt this way. I have been fighting with her a lot in the past few weeks and I can't handle it anymore. I know I need help, I am here to my fellow Mibbians first because I know you all care about other Mibbians as much as you care about the people you know in real life. I feel that I can trust you all to help better than any hospital, mostly because I do not wish to visit another anytime soon. So please, anyone with words of advice please share. Thank you, thank you very much.