Hendrix,
I totally understand how you feel, I've been there myself. At 5'5 in the US, I didn't feel like a man. Now, after LL, and almost at 5'8, I know that I won't care if I'm still the shortest guy in the room/club/wherever. LL has changed my mental attitude, the way I look at things. I finally feel like myself now, after so many years I occupy a body I truly belong into. Why am I telling this to you? Firstly, I believe you when you say that you're a positive person other than your height and if you were taller, everything would be okay with your life. That's true - after LL, everything is now okay with my life, regardless of what my final height is. It's the "going through" part, and not really the "added centimeters" that makes you content and satisfied at last. However, I made a mistake when I was at your age (I'm 23 now). I let myself worry about height 24/7, I read forums every day, didn't want to go to classes or go outside at night, and although I occasionally did, everything went bad after a few drinks - me going back home or to the dorm alone, depressed at my height, feeling sorry for myself. First of all, you need to try to fix this attitude before LL. I know it's easier said than done, but imagine LL didn't exist. You do find a sense of community and support in internet forums but I wish I hung out less in forums and more with friends when I was at your age and in college. You have two choices, either you can get LL immediately if you're working or if you can convince your parents to help you out (if there is such an availability), or you should try to stop worrying about your height until you're finally able to do LL. I wish I didn't waste my years when I was 18. Please don't do the same thing to yourself and go outside, try to enjoy life as best as you can.
By the way, what do you mean by "I still can't drive"? Come on man, that's completely unrelated to your height. You can learn how to drive anytime. And did you mean "Feeling like a MAN trapped in a child's body"? Because that makes more sense, lol. You're a man, feel like one! Go to the gym, try working out, it will do wonders for your psychology!