In a word, stress. Take anything good—lovemaking, exercise, sleep, healthy eating—and douse the brain in stress. It goes to extremes. Most of the stress you feel comes from how you process daily life. The brain is set to either ramp up stress—and with it extremes—or to process your experiences and work its way back to joy. So the solution to extremes of behavior is to rewire the brain so its default—its emotional set point—is balance and joy instead of stress. Try three emotional brain-training strategies to get you started in rewiring your brain.
First: Check in