"A suicidal person may not ask for help, but that doesn't mean that help isn't wanted. Most people who commit suicide don't want to die--they just want to stop hurting. Suicide prevention starts with recognizing the warning signs and taking them seriously. If you think a friend or family member is considering suicide, you might be afraid to bring up the subject. But talking openly about suicidal thoughts and feelings can save a life." ~ Suicide Prevention: How to Help Someone Who is Suicidal
The link above has some excellent information. Please read even if you think no one in your life is facing suicide.