Help getting over extreme self loathing

I hate myself more than anything. My self loathing consumes me. I notice it affecting my career, my relationships, and even my physical health. I do not live up to my full potential because I do not trust myself. I do not put myself out there socially or in my career because I will just tell myself I’m stupid and worthless. I don’t take care of myself physically because I don’t believe I deserve it. I constantly spend so much time ruminating on negative thoughts about myself instead of trying to improve my life. My awareness of the time/missed opportunities wasted on my self hatred makes me hate myself even more. I feel like I’m self aware of my negative self thinking and its effects on my life, but I have no idea how to stop it. I try to reprogram my brain and change the thoughts into positive, but I can’t stay consistent because I do not believe them and do not think I deserve it. Wtf do I even do at this point?