Well, I wouldn't use a song that would encourage people to commit suicide, I would use the opposite. Maybe " How To Save A Life " Would Be Good . Hope this helped ! :)
I think u could use If I Die Young by The Perry Band or Russian Roulette by Rihanna those are two songs I suggest I hope that helped u :)
how to save a life, mad world, anythn by linkn park , anythn by the fray, everythng - lifehouse, somwhere over the rainbow,
"Jumper" by Third Eye Blind
why by rascal flatts