Par is the true measure of golf. It can also be used to measure a human life.
There are 18 holes in a round of golf. Should you par half of these holes, and be over par the rest, you have done a half-ass job of playing golf.
There are 70 years in a human life. Should you be the best you can be for 35 of those years and a jerk the rest, you have done a half-ass job of living.
Hey, some do worse. Some "golfers" can't break 100 and still play every time they get a chance.
The normal structure for what constitutes "par" on most holes on most golf courses in the world is discussed in the following writeups: