At the beginning of my teaching career, I benefited from having colleagues that were very senior. A group of them had taught in that school since the 1970s.
They were chill and nurturing.
One of my colleagues was a very old man who had started teaching in the year Singapore gained self rule (go and Google if you don't know!) and was posted to the school in the sixties.
He had seen ALL the principals the school had up to that point.
There was once I asked him who was his favourite principal.
His reply was, "They are all the same."
He did not elaborate. He was a man of few words.