IN DEEP TROUBLE

Hey guys. Im 19 years old and I suffer from ED. I think I have it since im 17 and I was ignoring what it was before. It's mostly because I masturbate like 1-2-3 times a day since im 14-15 and I thought it was normal so I kept going on going on. At 16-17 I started masturbating very fast and I guess that's why I have ED now. I have talked to a friend about it and he suggest me a sex therapist, i doubt he would help me because it's a psychological problem. I think the only thing that can help is to practice, this past month at night I used to take 20-30 minutes a day just masturbating and stopping before erection to see my responses and it's not looking good but I guess it's the only thing that could help?) Any help guys?my sperm count is low and sperm is very thin. i m also sufering from premature ejaction . PLEASE HELP ME