Needs help with staph infection (MRSA)?

I have a staph infection i picked up in an athletic locker room. It is on my right lower wrist and never heals. I've picked at it a lot but recently having been touching it at all. i went to the doctor and they gave me this cream but it didnt work at all, ive hade better results with neosporin cream. What can i do to get rid of this, any remedies or over the counter medications. Its embarrasing and i try to hide it from my friends. i feel like this infection isnt letting live my life to the fullest.