The England rugby team do a lot of work with the military and other organisations to look at how to develop leadership. After a win they spend a long time analysing how they played and what they, individually and collectively, could have done better. After a loss they have a much shorter washup. It might sound counter-intuitive but it is much easier to get people to say "if I had done this we could have scored even more points" after a win than admitting that they could have won except for something they did wrong.