My friend says our lives are like trains. We make various “stops” for school, college, job, marriage, and family. At each stop we spend time with others who have stepped off. When we graduate or change jobs, we say goodbye to the people at that junction and step back onto the train. Only a handful of people stay with us all the way to the end. These are the most important people in our lives, the people who receive most of our time and attention.