I used to be very secretive about it, but I ended up telling to lots of people. Social worker, three psychiatrists, mental health nurses, a few friends, my parents... I guess it made my situation better with my disability because the social worker actually felt sorry for me. Besides that, I was able to talk almost freely with one of the psychiatrists, even though he was lazy (he is not being paid to solve my problems, he is getting paid to "work") and didn't really help me at all. I also told people in my group therapy sessions to no avail. I don't think other people knowing really makes any difference. If you are in the situation where you are going to kill yourself you are going to do it no matter what.