"There was a pull drawing me to the trail. It was like the way the Earth pulls at the moon from its perigee, or their closest points," Perry explained. "My professional life was like the apogee, or the furthest point away from where I needed to be."

Nat Read never grew tired of sitting up high in a rail car, like he was on a magic carpet, watching in fascination as America passed by.

Scott Montefusco stops frequently on his trip to speak about the importance of knowing U.S. history, and supporting people who help keep Americans safe and free.

Without purpose, you are simply existing and that's no fun at all -- even if you have all the money you need and can afford to live a life of leisure.

The biggest choice we often face after reaching our 50th birthdays is whether or not to pursue what God is tugging at us to do.

When you are over 50 and trying to identify what to do with your life, think about purpose from the perspective of the individual letters in the word.

The trip was not only an adventure, but kind of a pilgrimage, both spiritually and physically, to overcome some things that had taken control of Perry's life.

When Mike felt depressed and unfulfilled in his work, he began a habit to create something new every day for a year until he renewed his purpose.