Why do you think people have suicidal thoughts? Is it reasonable to result to potentially killing oneself to be able to remove the pain a person is suffering from? What are your thoughts about this matter, is it acceptable or not? Why does a person result to thinking of suicide? How can you help the person to change His/Her mind?
Usually it all came down to frustrations, dissapointments on expectation. Once my Councelor advice me using a story, he said there are 2 lions fighting within us the BAD and the GOOD whom do you think will win.... the answer is the lion that will won is the one whom you fed most.
So just disregard all thy negative thoughts.