The Hole in One.
Primarily, this is a golf term. But we use this phrase (or forms of it) for other purposes as well.
In the game of golf, this phrase means that you’re have been able to place a ball with a diameter of 1.68-inches into a 4.25-inch-wide hole located about 700 feet from the tee using a 44-inch-long stick - with only one shot. That is one amazing feat! (Sorry. I just liked the feet/feat thing.)
In life, it means you’ve ‘nailed it’ the very first time. You’re an “Ace” - please take a bow.
I haven’t played golf for quite some time now (a little bit sad, but it’s just too dang hot!) but just like you, I have played at "life" every single day.
I have never accomplished the “hole in one” while playing a game of golf. However, I have achieved more than a few “eagles” which, for scoring purposes, are ‘like’ the hole in one – just without the one part.