My penis is very girthy and i was wondering if there is any natural or surgical way i can go about making it thinner?

Consult a urologist: I know of no such "natural" way and doubt that any respected urological surgeon would perform such a procedure. You can always consult with a urologist to explore your options and have questions answered. Being different is often intimidating but should not be the focus of your life. Knowledge is power & you need to find out more about the issue from those most qualified to provide real info.