As adults, we have more responsibilities than we could have ever imagined growing up. Learning the work of marriage. Navigating the bumpy terrain of parenting. Maintaining social relationships. Facing grave hardship. Finding contentment in our career. <br><br> As the years pass by, we sense how the good things in life are so often eclipsed by stress. We find ourselves doing everything we can just to endure adulthood, all the while wondering whether we are actually enjoying it....