Hang in there mate. I know how you feel - I'm 19. Keep doing your research and follow a good lifestyle.
I couldn't imagine anything worse - being covered in acne. It can change your life, I know. But stay strong, and know that you will overcome it. You have made big changes in your diet, that is a BIG help. Keep it up.
Try getting to sleep round 10pm, and drink plent of water. Those are two important factors. Take care, continue to live your life, because sitting around waiting for clear skin is not the answer. I have been there, and still do suffer from isolation due to skin. You're not alone believe me!