My PPL instructor, now a friend, is a career instructor, who recently celebrated his 15,000th hour (in a Turbulent!). He has never had an injury from flying, despite several real FLs, in fact his only accident was in a car, and wasn't his fault.
He enjoys aeros and other fun flying, sometimes in extreme conditions.......but he does everything with complete professionalism. He not only knows every part of an aeroplane, he knows its phone number and address as well. He knows all the checklists by heart so when you miss one he'll tell you and where in the list it should have been. He knows all the paperwork, and he can tell excatly what the weather is going to do......in fact, I think he tells the weather what it's going to do!
I've known him for ten years and he is the model for my flying career. We are but humble PPLs, but we can make our flying professional.