What started as a challenge from Micki (my amazing mother-in-law) evolved into a habit. Throughout each month, I list things for which I'm grateful. Bike rides along the Greenway on a sunny day. Cabot cheese. Serendipitous timing on my commute. Exceptional sunsets. Conversations with friends. Video chatting with family. Often it's the little things, things that would be forgotten in less than 24 hours if it wasn't for my list, that add up to a content and satisfied life.