I need your advice, regarding mental health and driving.?

I have my G2, and reside in Canada. I often run erronds for my mom, and take my annoying, always complaining, tantrum throwing, autistic younger sisters where they need to go. I can't stand some things they say (like continually calling my fat - despite my eatting disorder, and telling me to go kill myself - which I have attempted). Nonethe less i'm trying to get over those, and my question is since I often find myself still considering suicide (I don't think i'd follow through with it, unless I had a sure way like a gun or w/e) but do you think I should hand in my license? I have considered crashing my parents van, on afew occasions, but have not been diagnosed with anything (as I try to act as if i'm normal even though I may be depressed/ suffer from anxiety). If turning in my license is the right thing to do, I need to know if I will be able to get it back and how to go abut doing that. Also I don't think i'd crash the vehicle into anyone elses, or do it if I had someone with me.