It all adds up to who we have become, and what qualifies us to do things/know what to do/help others with advice.
But, at some point, we all do become tired. There's a reason that people tend to retire at a certain age. Some jobs we could probably do forever, but others change. The job changes somehow, the management changes, we have more trouble with health, we want time for ourselves and our families, etc. etc.
I'm glad that you finally made it to where you are. It was a heckuva' journey getting there.
Love All Life; Thank You For Posting! :)