When we only do what we were told to do, we own the output.
If anyone else gets that work done better, cheaper, faster than us they would replace us.
Owning the output makes us dispensable.

However, if we stopped and asked ourselves, “why am I being told to do what I have been told to do?” we will own not just the output, but the outcome as well. 
Owning the outcome will surprise people each time we deliver stunningly more than what we were supposed to do.

Owning the outcome, instead of the output makes us indispensable.