Go get your hair cut somewhere trendy. You'll almost certainly be cut by the sort of person who makes you get a red face. Have a couple of cool stories to tell which you know are cool (or borrow some dhv from here). You will look in the mirror when you talk to them too so it's almost like looking into a tv which makes it easier. Go back every 6 or so weeks to get a new cut and develop your conversation skills.

FWIW, I was in the same position until age 19. I initially solved it by getting pissed!

PS. I know book reading is easier than manning up and doing something real, but you should also consider a pua idea that 10% of what we do should be read, 90% real.