i really think diet is a huge part of it and scrod nailed it.
i'll open up too: i used to be super self-conscious about the moderate to bad but not terribly severe acne i had, and while no one teased, i'm sure it accounted for some of the girls turning me down or guys deciding they didn't want to be my friend. what you learn as you get older is that those are the kinds of people you don't want to associate with anyway, so the self-consciousness is best left behind as soon as you can get over it. i know you don't feel like you're still a kid, but give it a few years and you will feel that way.
what sucks is that while my face is relatively much clearer at my geezery age of 27, it's just moved to my shoulders and upper arms. which is ****ing gross. and it's never the whitehead super quick developing and super fast healing stuff, it's the deep under the skin painful hard pack detonators that entrench themselves slowly over a number of days or weeks and then grow in pain and won't pop ever unless you go all army corp of engineers on them.
none of the medications worked for me, and while i sometimes use some ex-girlfriend's neutrageena exfoliating acidic crap that she left in my shower(girls man WHY) i can't ever really tell that it works or doesn't work. and it sure seems as though it doesn't on my arms and shoulders.