I hear you. I've been in debt for most of my life and I just can't control it. When I want to spend money, it's like I genuinely can't stop myself. Whatever the thing is I want to buy, I "need" the thing, it will make my life somehow better etc. Logically I know it won't but something takes over.
I've slept with men I didn't even fancy. When people say "just say no to sex" I don't know how they do it! Again, it's like something takes over and I think what the hell, why not. I hate it. I don't want to sleep with these people. But I can't find that "off" switch.
I drink too much, no drugs but I do smoke. I eat crap. My house is a mess! If I'm leaving the house then I do shower, but if I'm just home then my personal hygiene is crap.
The rejection sensitivity thing is awful. It's impacted all my relationships. I think I've been drawn to controlling men because for one, it takes a lot of the responsibility of "life" from me, if I'm being told what to do. And also, they are less likely to reject me at some point. Although one did and it nearly destroyed me.
All that said, I'm older now and am tackling some of the things. I don't date at all now. It would do me no good and I've realised that. Therefore I also no longer have sex with anyone! I've cut the drinking a lot, working on giving up smoking. I've started being a bit better with money. I still have a long way to go but the older I get, the more I'm feeling able to stop and think before I do something. But I am nearly 60! It's taken that long. If medication would help you now, then it's probably worth doing. I don't see the point at my age, and when I am actually finally getting a bit better on my own.