Volente: No matter how good one is or is not, this is a very difficult profession for everyone. IMO.
The unprofitable want to become profitable, the profitable want to get bigger, the bigger want to get huge, and the huge want something else.
That there aren't more fights and ego-battles is due to moderation and self-restraint. It's very easy to lose one's marbles, not once in a while, but often.
Everyone, that has been in the trenches for a while, knows that having a good plan and executing it properly, at all times, are very different things.