How to avoid frustration on the golf course!

A question for you: Why are you actually frustrated? We can often see it from afar! The frustrated golfer whose 1-metre putt, which they thought was safe, has gone out of bounds again or whose drive has flown into the out with a record-breaking hook. We can see this in their body language, in their gait - and sometimes we can hear them even though there are two or three holes between them and us. I know you don't know this frustration, neither on the golf course nor in "normal" life.  It's true, it can be frustrating when the ball doesn't land where we want it to despite a good shot.