I have such an extreme attitude about work where I can just completely be derelict of my responsibilities and then when I am not derelict I am completely indulged in it. I swing pretty wildly from the two extremes.
In other words don't expect to always be great. Disappointments failures and setbacks are a normal part of the lifecycle of a unit or a company and what the leader has to do is constantly be up and say 'we have a problem let's go and get it'.