Autism is (thought to be, based on current research) hereditary. For this reason, it is known as a "disorder of neural development" and not an "illness" or "disease." It cannot be cured, either by conventional means (modern medicine) or esoteric means (magic).
Autism indicates that you have trouble with social interactions and are taken to repetitive tasks and behaviors. If this interferes with your life in a significant way, chances are you are already in some form of therapy. Doctors can diagnose autism as early as three years old, and there are many programs designed just to help children with autism live a normal life. If, however, it does not, you are said to be "high-functioning." Doctors may prescribe you medication for any anxiety you suffer in social situations, or recommend therapy. These are all things you should talk to your parents about if you're concerned.
As for magic, I'd recommend looking into meditation. Meditation is a fantastic stress-relief mechanism. If you can learn to relax yourself and enter into a focused state for even a short amount of time, it will dramatically improve your focus and reduce your anxiety.
Good luck, and blessed be.