[metallion]

My take:

Each moment I learn something is a great moment

so

Anything you do in life (such as a single golf stroke) that comes out the way you thought it would or planned to means you dod not learn anything new. But it makes you feel good. (Or should! Hey - you know how things work so you are able to predict the future. That is a great advantage in life. Actually, the human brain is built to make people feel good about confirmations)

Anything that surprises you in life or does not come out the way the way you thought or planned is an opportunity to learn something new. It should trigger your curiosity.

so

if you cherish learning there is nothing in life to be frustrated about. You either just notice that things work the way you thought they would (which makes you feel good about your ability to predict the future) or activate your curiosity.