Commitment is a promise that we make to someone or ourselves.
Imagine you have a friend that always break his promise to you. Will you still trust him? To most people, the trust will be broken. Now back to ourselves, if we have commit / promise to do certain things and yet we never do it, eventually will you still trust yourself?
Can you now see the danger or risk of breaking our commitment / promise to ourselves? So from now on, keep our commitment / promise and together we will improve our life.