My body is a thousand times further ahead than my brain?

I have something similar to autism and it's making me act all weird. I used to act perfectly fine . . . until social interaction came into my life. Then I tried to master it, without realizing that the goal was just to live life than to do things perfectly. Now all my peers are ahead of me at everything, while I'm still worrying how to speak. I mean, I speak fine, just a bit immaturely. It's like I got left behind, but I'm somehow still on the bus ride of life. I wish I was normal, then I wouldn't feel so crazy. My mind seriously still feels like it's 12 or something, while the rest of my body is 19. If I went back in my brain now to try to save myself, WOW people would think that I've lost my mind. I think I need serious help. My guess is that once I release all of these inner emotions that I've kept cooped up, I am going to explode like a volcano and just go flat out wild lol Opinions?