When I was young, I was in the basement of a friend of my parents' house. There was a women's robe hanging up that had blood stains all over it. It really creeped me out, so I asked my mother about it. She said that the friend was manic depressive and that she had tried to commit suicide. After that, if you had told me that someone was manic depressive, I would have thought they were batshit crazy. Later in life, a few years before I got my diagnosis, I met an older woman who was manic depressive. She would flit around as if she was on a mission from God. She would say the weirdest things that were completely out of context. About a year or so after I met her, she committed suicide. That reinforced my opinion of bipolar people.

After my diagnosis, I only told my immediate family and one friend who I knew I could trust. I had personally experienced the stigma from the giving side. I didn't want people to think that I would start shouting at the moon or try to kill myself at any moment.

You can't cure the stigma all by yourself and there is no reason for you to try. Only tell those you completely trust to be non-judgmental and who love you unconditionally.

Just my opinion. Hope this helps.