I'm just going to jump in here as anon (to avoid sounding arrogant). I haven't been involved in one of these TSR topics before because frankly they're just hilarious. But it's late at night, I can't sleep and I feel that I may as well post some of my own experiences in regards to the two main 'confidence' downers from most of the guys on here: 1) size 2) girls in clubs and whether being good looking is all that counts.
Some background info on me: I'm 19 and on a gap year now. I'm just about 6'2 (last time I checked, think I'm still growing), play a lot of sport to a high level, and as a result of a lot of physical activity focused around lifting weights I've got a good body. I'm constantly reminded that I am attractive by both men and women. It's commented on a lot. The thing is though, I wasn't always good looking. I'm naturally quite pale, had bad teeth, and before my face 'matured' I wasn't especially attractive, and unfortunately looks seem to matter far to much in this world, but not moreso than with young teenagers. So I spent my first 3 years of senior school as a relatively quiet kid, who stuck with a fair group of friends in his tutor group and didn't really branch out of my comfort zone. Then literally overnight (or over a school trip) the girls decided that I - having had my braces off, grown my hair longer, and developed a strong jawline and decent body for a kid of that age - was suddenly one of the best looking guys in the year (the best if you are to believe the year 11 yearbook awards).
So what's the point that I'm getting at? Well, scientists believe (or are almost completely sure) that the first 16 or so years of your life have far more influence on your personality than your post 16 years do. The fact that the first 15 years of my life - the majority of my life so far - was spent as that shy, quiet, insecure kid, means that now a great deal of my personality and to an extent, my self confidence, is still effected by those early feelings of insecurity, and no matter what anyone says I am still effected to an extent by it. What I've realised however, is that you don't get anywhere without pushing yourself out of your comfort zone. Think back to the 'popular' kids in the earlier stages of secondary school, where all of those guys particularly attractive? No. But they were incredibly confident. You can apply this in night clubs. I might see a girl checking me out, but even being good looking, that doesn't mean girls flock to me. The guys who get the girls in that environment are the ones who talk to them. Who make them laugh, and don't use cheap pick up lines or seem arrogant. Being good looking just serves as a bonus.
So applying this to size. I'm average. Which on a 6'2, 14.5 stone frame doesn't look fantastic I'm telling you. I admittedly worried about it a lot until 6 months ago. I still wish it was bigger now, but the difference is I no longer care. I've faced facts that it's unlikely to get that much bigger. After I broke up with my first real girlfriend who I lost my virginity to just before my 16th birthday, I cut myself off from going the distance with other girls. Until 8 months ago the most I'd done was give, with two instances of not being able to get it up (I blamed alcohol, but really it was confidence), having made out with 20+ girls in that time and had the chances to take it further. I blew off 3 100% sure things in which the girls were all for it, and 2 of these girls I would have probably ended up dating had I had the confidence about the size issue. It developed when I was 18, as suddenly I felt very out of practise. Whilst I was good at all the other stuff (the benefit of being bestfriends with the boyfriend of the girl who's friends with everyone is that you hear about these things) I really hadn't had that much experience at going all the way, and that just made me even more intimidated at the idea of doing it.
What changed my mind was when I was two conversations I had with two friends of mine who've had a lot of experience. Both of them freely admit they're completely average, yet had no worries whatsoever, and the girls weren't complaining either. Their attitude was 'sure it'd be nice to be huge, but really the number of guys that much bigger is pretty slim, so good for them, and any girl who complains isn't worth my time.'
That, coupled with a drunk conversation with 4 girls who've each slept with a 2+ guys in which it was clear that they never really talk about it at all and that they didn't seem bothered at all, lead me to finally just go for it.
And lads. Honestly. Best decision I've ever made. I've slept with 8 girls in the past 6 months. 2 of whom I know (through just common knowledge) have been with guys who are much bigger than me, and none of them have even mentioned it. Feedback wise 3 of them wanted it to be a regular thing (it is ), so it can't have been that bad. And just on a side note, getting back into the 'game' really wasn't bad at all.
So in conclusion guys, just take a deep breath and jump in. It's really not that cold.