Have you had a mental illness?
I was diagnosed with major depressive disorder, severe anxiety (social anxieties especially..) >:\ 'Body dysmorphia'...
I've learned to control them well.
I personally have a suspicion of OCD...it runs in my family and I have worsening symptoms of it.
Have you faced any discrimination for being mentally ill?
Sometimes it slips to the close minded people or they hear rumors, I get teased about it, just immature things about hospitalization and straight jackets. lol. I also had a teacher who treated me differently (which I got permission to be excluded from public presentations of things like to the class.)
Are there any positive things you have learned from having a mental illness?
I've become a better person with treatment, I respect others a hell of a lot more, and I'm mentally and physically healthier with my awareness.