You know I love a good personality book, right? Gretchen is best known for her work researching habits and happiness, which you may have read all about in books like The Happiness Project and Better Than Before. In the course of that research, she noticed that different people had drastically different responses to the question "How do I respond to expectations?" In this book, she's compiled what she's learned—that people fit into one of Four Tendencies based on how they respond to inner and outer expectations. I read Gretchen's blog and follow her podcast, but it wasn't until I could read the information in book form that I felt like I really got it and could categorize myself correctly. (Upholder, right here, but you may be a Questioner, Obliger, or Rebel).