In at least one moment of our lives, many of us have felt trapped, alone and like no one would miss us if we were suddenly gone. Some have stared into this darkness and thought about killing themselves.

But what causes one person to stop in his or her tracks and another to follow through? What is so horrible in the lives of some teenagers to cause them to kill themselves?

"When I was 11, my dad died, which affected me majorly," says 16-year-old Kayciee, of Roanoke, VA. "I was closest to him and when he died, my world stopped turning." That, along with other problems, caused Kayciee to try to kill herself.

"I didn't truly understand how final suicide was until I tried attempting it," she says "I almost hit the vein and realized just how final suicide is. I could be dead right now, and that scares me."