Everyone experiences anxiety at some point in life. Whether it be sleepless nights, sweaty palms, or a full-blown panic attack, anxiety is a powerful emotion with far-reaching roots. But while many people can successfully manage it with pharmaceuticals, prayer, or a day at the spa, for others, anxiety can be a constant threat to one’s mental and physical well-being. And because there are so many different ways to experience anxiety (fear, paranoia, depression, physical pain, hysteria), there’s no simple technique for chronic sufferers. So to illustrate the vast spectrum of anxiety that people may encounter, here are 4 books to help you understand the complexities of the condition.