I cant end relationships. I need help.

I have an irrational fear of ending relationships with people, even when I need to. I don't know where it's from or what to do. I admire people who actually end relationships and deal with the aftermath. I'd rather negotiate and beg, and do the slow fade instead of actually verbally breaking off. I get so panicky for no reason.

In the end, I find that I'm a relationship hoarder. I can't settle with not being able to contact people who once gave me joy. Logically, I know better but I don't know how to implement it. What do I do?