That I'm not always right, or always better than Joe. And that: I'm not always wrong, and Bob is not always better than me.
That we might hit our deadline. And the world will still be there if we don't.
That people do things I don't understand, for reasons I will never see or be able to anticipate. And that's simply the way it is.
Dark corners are found in, or emerge from all positives. Great things are found in, or emerge from all negatives. Nothing is black and white, despite it's appearance. Everything is wishy-washy gray. What was right yesterday may be wrong tomorrow and vice versa.
Or, in summary: things are easier when I'm easier going