Never commit to things you cannot do.
Oddly enough, material does exist that emphasizes the fake-it-until-you-make-it approach.
We should always be willing to grow and improve by moving outside our comfort zone, but the idea here involves areas we know we cannot do. For example, when someone invites us to dinner and we know we cannot make it, instead of saying no, we delay the inevitable by saying “maybe.”
Jesus taught the need for our yes to mean yes, and our no, no. Jesus added that anything beyond these is of evil.
It is critical to our leadership to be a person of our word.