I read a lot of textbooks and scientific journal articles in graduate school, but my favorite psychology books were the ones that were written for the masses. Here're the 10 essential books I read that informed everything I write about on this site.
7. Authentic Happiness: Using the New Positive Psychology to Realize Your Potential for Lasting Fulfillment: Seligman's classic shifted my perspective from focusing on what is wrong to what is right in one's life. If you are new to positive psychology, I recommend reading his updated book.
9. Switch: How to Change Things When Change Is Hard: The basic model of "directing the rider", "motivating the elephant", and "shaping the path" is a great summary of everything we know about behavior change.
10. The Political Brain: The Role of Emotion in Deciding the Fate of the Nation: Deeply partisan, though a great breakdown of how emotions and logic are needed to create powerful messages of persuasion.
What's on your list of essential psychology texts?