In the minds of great managers, consistent poor performance is not primarily a matter of weakness, stupidity, disobedience, or disrespect. It is a matter of miscasting. Marcus Buckingham
As an instructor, you must be able to distinguish between poor performance caused by lack of ability or aptitude on the part of the student and poor performance caused by lack of effort. You should treat the first with patience and the latter with firmness. You must never apply sarcasm and ridicule. Bruce Lee
If you are building a culture where honest expectations are communicated and peer accountability is the norm, then the group will address poor performance and attitudes. Henry Cloud
When you win, sometimes it overshadows a poor performance. Mike Krzyzewski
It's not like we have not had close games. We've just been able to win them, and as a result, the reality sometimes doesn't set in that you're weak in certain areas or you're not doing certain things well. ... When you win, sometimes it overshadows a poor performance. Mike Krzyzewski
Perfect Planning Prevents Piss Poor Performance. (a.k.a The six P's) English Proverb