The deepest thing in any one is the conviction of the bad luck that follows boasting.
I had such a run of bad luck that you lose faith that good things are going to happen any more. I still don't answer the door because I went through so long expecting it to be a bailiff.
Your competition is not other people but the time you kill, the ill will you create, the knowledge you neglect to learn, the connections you fail to build, the health you sacrifice along the path, your inability to generate ideas, the people around you who don't support and love your efforts, and whatever god you curse for your bad luck.
There is a certain comedy and pathos to trouble and accidents. Like when a driver has parked his car crookedly and then wonders why he has the bad luck of being hit.
As a leader, you don't get too high on the highs or let the bumps balance down. Every leader over time has probably equal amount of good luck or bad luck - or, you could argue, has good opportunities or challenges.