The measure of success
Your measure of success informs a lot about how satisfied you feel with your life. It’s 100% within your power to choose your own measure. Most people don’t bother. They’ll stick with the measure that everyone else around them has picked.
There’s an exception. People who have near-death experiences find it a lot easier to choose their own perspective. It seems to inspire a sudden jolt of clarity.
So take up extreme sports or do a few hours of serious introspection. Whichever sounds like more fun to you.