The Gifts of Imperfection: Let Go of Who You Think You're Supposed to Be and Embrace Who You Are, Brené Brown
The basic tenet of any great self-help book is not about improvement but rather acceptance. Sure, "self-acceptance" sounds like some lame, eyeroll-inducing concept, but let's face it: if you're at all interested in self-improvement, you gotta start somewhere. Brown's book is about introspection, which is the first step in any process in which change serves as the ultimate endgame. Brown's guide isn't one that encourages its reader to go changing anything; it focuses on understanding one's self — all of the positives as well as the negatives — and obtaining an appreciation for who you are before you can figure out who you ought to be.