The last time Clancy Martin tried to kill himself was in his basement with a dog leash. It was one of over 10 suicide attempts throughout the course of his life. Yet, he survived — as he had numerous times before. Martin is a prolific author and a professor of philosophy. His research covers the ethics of social and behavioral health, especially in the areas of suicide prevention and the treatment of addiction. In his new book, “How Not to Kill Yourself,” Martin chronicles his multiple suicide attempts in an intimate depiction of the mindset of someone obsessed with self-destruction.