I think that The Times They Are A-Changin' by Bob Dylan describes any person's life at one point or another. It is also home to one my favorite verses of all time.
"Come mothers and fathers throughout the land
And don't criticize what you can't understand
Your sons and your daughters are beyond your command
Your old road is rapidly aging
Please get out of the new one if you can't lend your hand
For the times they are a-changing."