You Are Not So Smart: Why You Have Too Many Friends on Facebook, Why Your Memory Is Mostly Fiction, and 46 Other Ways You're Deluding Yourself

by David McRaney

In the end, Alter and Forgas concluded the happier you are, the more likely you will be to seek out ways to delude yourself into maintaining your rosy outlook on life and your own abilities. Sad people, it seems, are more honest with themselves.