How can I get an old raised scar removed from my arm? I'm embarrassed to wear short sleeves

I have a 20 year old scar on my arm that says Anthony. I am embarrassed to wear short sleeves because it was something I did as a kid and don't want people to view me as a "cutter". It is about 2 inches long, about half an inch wide and raised and really noticeable. What can I do to remove it and how much would removal cost?

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