well it's your lucky day! i happen to have some very good advice for this problem. just last year i was a huge noobie, but now i'm a sexual acrobat!!!
ok, heres what you can do (worked for me LOL)
1. put it on ice in intervals of 10 minutes like a day before the sexual act a few times (no more than 5!!)
2. be a little rough when touching yourself
3. think about naked men