I have a similar anecdote, my dad was into like western pseudo-Buddhist shit for a while, and he basically said “Happiness is just in your head, so just choose to be happy”
And that’s bullshit for a number of reasons but there is some core of truth there that I’ve absorbed which is “being angry at people takes a lot of energy and is unpleasant and you can kinda just choose not to”
I think very frequently about that story where a monk carries a woman across a river and a couple miles down the road the other monk says to him “I still can’t believe you did that!” and the first monk says “Bro I set her down on the other side of the river, why are you still carrying her?”