Dr. Mark Goulston is a psychiatrist, best-selling author, and executive coach.
He spent many years of his career working with patients who were experiencing thoughts of suicide. He learned that one of the best things he could do for people who were in pain was to sit and listen to them. 
Some of the things he talks about today are the truth about why people experience suicidal thoughts (it's not always depression), how to talk to a loved one if you're concerned about them, and what you can do if you are experiencing thoughts of suicide.