In the last five years, what new belief, behaviour, or habit has most improved your life?

It was hard at first. I craved the soft, chewy, comforting feel of bread. I craved crunchy pizza dough, sweet rolls, and all the foods that I learned contained wheat—things I had never suspected. For the first 10 days or so, I craved these foods, but I focused each day on staying disciplined; and, fortunately, my family and friends—even though they thought I was crazy—supported me in my quest. But as the days rolled along, I began to feel different. I felt lighter, more energetic. The nighttime stuffiness I had lived with for 15 years suddenly disappeared. By the end of the first week, I no longer wanted rolls and cookies and breads; it was as if a lifelong craving had miraculously abated. Every day I woke up feeling as though I'd had the best night's sleep of my life. I was beginning to believe.