Staying quiet for even short periods of time builds willpower and self-control because you exert force on your will by not giving in to the impulse to talk.

So many people talk far more than they have to. Rather than speaking precisely and communicating only what needs to be said, all too often we go on and on.

Discipline involves saying exactly what needs to be said and preserving your precious mental energy by not talking more than you have to. Measured, precise speech is also a sign of clear thought and of a serene mind.