Commitment

Commitment means there's no choice. I'm in for the duration. I will finish what I've started
There is an old saying that goes, "Stand for something or you'll fall for anything."
To commit is to pledge yourself to a certain purpose or line of conduct.
The best description of commitment is "persistence with a purpose".
We should remain true to our course; which may mean committing yourselves to things that people around you would normally disapprove. Let nothing distract us from being happy, let nothing else determine our fate, but ourselves.
What makes us happy is what matters in the end,
not what we acquire.
The quality of a person's life is in direct proportion to their commitment to excellence, regardless of their chosen field of endeavor. ~ Vince Lombardi

A promise is something you say, and a commitment is something you do. A promise is situation-specific. A commitment is contextual.
Without commitment there is no point in doing anything as the end result will not be what was expected or desired. Commitment also builds a strong character and leads to other positive habits.
Concept in commitment is staying focused and pushing through challenges in reaching your goal- it's about staying true to your future.
In the larger sense, commitment is one of the bases of integrity. A person who is able to make and keep commitments has learned how to earn trust and respect from those around them, including themselves.
It effects the person in all areas of life.
There's always a way - if you're committed. (Anthony Robbins)

It takes a large dose of self-control and maturity not to walk out the door