a concept named "cruel optimism." This is when you take a really big problem with deep causes in our culture- like obesity, or depression, or addiction--and you offer people, in upbeat language, a simplistic individual solution. It sounds optimistic, because you are telling them that the problem can be solved, and soon-but it is, in fact, cruel, because the solution you are offering is so limited, and so blind to the deeper causes, that for most people, it will fail.

— Stolen Focus by Johann Hari (Page 147)