This is a book for people who are struggling to find their way out of a cave of anxiety, depression, and suicidal thoughts—and for anyone who cares for someone who's been lost in that cave.Suicide is now the leading cause of death among young adults 18–34, and the fourth-leading cause of death among the middle-aged.Just as a computer's hardware determines its foundational capabilities and its software determines how it interfaces with the world, humans' hardware is tied to ...