Collateral Damage…

How do you measure your successes? What criteria does one use to clearly denote the line between positive/negative, advancement/retreat, success/failure?

It is difficult for some to accept any failure at all, any perception of anything other than complete victory. Like those that brood over an A- or not getting promoted ahead of their peers.

How much effort is wasted seeking perfection? What happens to the casualties of the battles for exact excellence?