You're just telling yourself, "Without you, commitment device, I am nothing, I have no self-discipline." And then when you're ever in a situation where you don't have a commitment device in place — like, "Oh my God, that person's offering me a doughnut, and I have no defense mechanism," — you just eat it.
Te dices, "Sin ti, mecanismo de compromiso, no soy nada, no tengo disciplina." Así, cuando te encuentras en una situación en la que no tienes ese mecanismo listo, piensas, "Ay Dios, me ofrecen una rosquilla y no tengo un mecanismo que me defienda" y te la comes.