Interesting topic, it was also covered in Chris Hedges' Empire of Illusion. I think it is a question of degrees. Positive outlook can be a wonderful tool -- seeing the silver lining -- but taken to an extreme can be detrimental illusion. I believe in being positive but also recognize the right to grieve and to work out problems. That said, Barbara Ehrenreich's new book looks like a downer. She's done great stuff, please watch this and and segment two, but I think I'll give the book a pass. Anger doesn't feed my spirit to action. Vision and being positive in moderation does. Full title: "Bright-Sided: How the Relentless Promotion of Positive Thinking Has Undermined America".