You Should Have an Exit Plan

We all get older and we get wiser. At some point we will 'exit' to retirement. Recognize that technologies are still evolving and the new hires are ikely more tech savy than you. 

Pay particular attention in the later part of your career to develop the ability mentor your ultimate replacements with your experience. Pass on your wisdom of how things work and let the younger apply their technology.

See points for a graceful career evolution here.