Marijuana has given me horrible burnout syndrome, what should I do?

I have had horrible symptoms for over a year and a half, all of which i have been sober during. My life is not the same as it once was, and I am frustrated by the fact that I have no control anymore. I am seventeen and I have smoke extremely heavily about 30 times, starting at the age of 13. I used to be smart, athletic, and funny, now I am just a lonely pile who doesn't give a damn about anything anymore. For all of you who deny that this even exists, I am living prove and I am dead certain that is what has changed my life so drastically.