I know someone in my school that was bi-polar, he ended up shooting himself in the chest in front of 2000 students during lunchtime.
As for me, I used to think about suiciding all the time. I used to be the center target for bullies at school. I was picked on by everyone, and kids would be too ashamed to be my friend.
I had about one friend, that didn't give a crap about anything, which is probably why he is my friend in the first place, but he didn't give a crap about me either.
My mom wasn't too supportive either. She used to b!tch all the time, pretty much everyday. My sister would b!tch too, or ignore me.
I used to sit in my bed and cry every night, thinking about suiciding.
The time I got closest to suiciding was when my mom called the cops on me when I was 13, for having a small argument with my grandma, which everyone in the house does because she says the dumbest things all the time. She told the cops that I abused her, so the cops came and asked me why I hit my grandma. At that point I was so angry and sad at the same time, I went completely numb, and was about to run to get something sharp to suicide right then and there. I absolutely would have if charges was pressed against me, but my mom gave in and told them that I did not hit my grandma, and it was merely an argument.
Although since I turned 16, my life has seemed to make an 180 turn. I started to get respect from people at school. Pretty much no one messed with me anymore. My mom seemed to have gone through her menopause, and was taking antidepressant pills, and my sister went off to college. I'm pretty happy with my life now, and I would never consider suiciding now.
Just to add, my mom has attempted suicide about a year ago. I don't think she really meant to suicide, but just did it to scare everyone. She had a pretty good way of suiciding painlessly. She's a nurse so she has a lot of syringes lying around. She just took the needle and started draining her blood out. It makes a big mess, and you die slowly and painlessly. Perfect way to suicide.