Yes man, I totally know what you mean.
I'm even above average, and I feel very very insecure about my size, a lot of times I'll be hesitant to let a girl grab my dick and stuff because im very self-conscious of my size, and like.. if a girl tells me I wanna fuck you tonight, ill be like arrg.. (if i didnt Penis Enlargement enough).. for example right now.. on friday this girl who is veryyy hot IMO, I can fuck her.. BUT I didnt Penis Enlargement in awhile.. I did tonight tho.. but arg, so now im like FUCK... I will probably post-pone fucking her, and possibly blow my chances of even fucking her if I hold out too long.. all because of a stupid belief about my dick.. I think it's due to all the adult entertainment I've watched/watch..and some media stuff. I just guess when you see a guy with a 10inch dick fucking a girl.. and you got 7.. it's like.. arg.. HydromaxMM.. I dunno...
I really wanna get help for this problem also, as it's really messing with my sex life.. making it non-existant..
I probably should just grow the fuck up, and blabla, I know.. can anyone offer any words of advice?