Years before I became a parent, I saw a great piece of advice: "If you want to be happy, find a way to incorporate what made you happy as a child into your life now." I gave that some thought. As a child, I loved being outside with my brother and sister—riding bikes, building snow forts, doing craft projects, writing poems and stories, reading and watching movies. When I read this advice I was in my 20s, and trying to adjust to the transition between full-time student and full-time worker. My roommate and I agonized about it. Should we go back to school? Should we work abroad? What should we …