Premature ejaculation what have you guys tried?

My story beggins when I was very young kid. Way to young. I find out about mastrubation and orgasam. At first it was hard to reach climax for some years. I did take to much time. And I had another problem I didn't have time becaouse I was living in apartment with mather father brother sister. So I had to be quick before somebody could see me. So I developt 'techunique' wher I was just touching myself belowe glans. And well there are nerve edings there. And I startet to doing like that for years and years. Always in rush to be quick. And now that nerve edings are so sensetive. I can not last at all. Nothing to do with how I feel or weak muscles.. it is like if women have super sensual clitoris and when you touch it few times she is finnished..
I belive only thing I can try is to stop mastrubating (well I have a massive trouble with that). But to be addicted to PMO (O to me was like a drug) for almost 20 years how long would it take to recover from that? At least 10 years?
I'm going to try to do this (if I succed):
-PMO free
-sleeping enough
-cold-warm therapy (if I can acces it)
-working out
-sunbathing
-eating clean
Have you guys tried liodocaine spray? Or seak help?