How Do I Find My Sense of Purpose?

At a street meeting that was held by a Salvation Army group, a young man who was a drummer in the band reflected on his past life and how it had changed.  "Before I was converted," he said, "I used to drink a lot, but I don't drink anymore. Before I was converted, I used to swear a lot, but I don't swear anymore.  Before I was converted, I used to womanize, but I don't do that anymore."  Then, he added, "Since I was converted, about all I do is stand on this street corner and beat this old drum!"