For just as for a flute-player, a sculptor, or an artist, and, in general, for all things that have a function or activity, the good and the well is thought to reside in the function, so would it seem to be for man, if he has a function.
I have to be involved in negotiations because players have to buy into me and what I want from them if they join my club, so all managers need to be fully involved in transfers, that's for sure.
Forget about every other lesson in the book. You have to be able to tap your foot or else none of what you doing you are not gonna have any control of your symptom.
Managing can be more discouraging than playing, especially when you're losing because when you're a player, there are at least individual goals you can shoot for. When you're a manager all the worries of the team become your worries.