I'm 5'3", it is an insane disadvantage. Even if that's false, no amount of words will change the belief -- it's experiences that change that.

But we both know that, no matter how fucked up you are, there are girls who would consider you "good enough". Your job is to go out and find out what those girls are like. One of two things will happen: either you're fine with those girls; or you'll suddenly find a massive motivation to improve yourself (for an endgame of what's possible, see Seth Green)

Your only problem right now is ignorance. Go out and change that.