How many of your Facebook friends do you think you know? Do you think you'd rush to a stranger's help when no one else would? Do you think you choose which product to buy based on whether you like it? Do you think you know why you procrastinate?

The truth is, you are not so smart. In fact, you're pretty irrational, just like everyone else. But that's OK - because that's all part of being human. In this pithy celebration of self-delusion, David McRaney explores in 48 short chapters, the assorted ways we mislead ourselves every day. Based on the popular blog, prepare for a whirlwind tour of the latest research in psychology, and to finally discover why we never get round to our New Year resolutions.