A spirit of excellence is about giving God our best. It is not about perfection, which is a good thing, because none of us are without imperfection. 

Therefore, just as it is important that we give God our best, we also must give one another some grace when their best falls short of what is perfect. We also need to give ourselves some grace when our best doesn't seem to be enough. 

Guilt, shame and fear are always working against the child of God. It is our confidence in God's grace from a position of reliant obedience that we can embrace the right position Christ has given to us. 

As leaders, we should require and reward excellence, when someone gives their best. However, we should also require of ourselves and our teams to demonstrate grace, working together with one another with love and understanding.