Im so angry right now! Anyone else have friends who "mean well" but just don't get it??

I told my friend I wanted to get my nose repierced and he starts talking about how its not a good decision and he thinks Im leaving my depression and going into mania. Its on my nerves for real! I saw my Dr yesterday and she didn't seem concerned at all. I do still have some depression but I don't think Im manic in the least!

How do I handle these people? Im really upset.