The word itself tells you what it expects from you. I guess in our life the only thing which binds relationship of any kind like friendship, love, and affection is your commitment towards it. There always comes a phase in your life where you start to think about your relationship and evaluate about your partner. The only measure of how good he or she is in the relationship is commitment.
Friends are for sharing everything and when you stop sharing your thoughts and decisions with them you break the commitment that you made to them. People when say that they are felling loneliness it is just because they don’t have any one to share what they are feeling inside them. People do have a thing for their friend to share but the only reason that stops them to share is their own pre-biased evaluation about their friend on the basis of commitment shown by him.
When people get in to a relationship like love. The level of commitment increases. Think of the time when you wanted to talk to your partner and he or she considered other works important over you. When in a relationship the only thing holding together two person is the level of commitment they have for each other. And whenever this level is imbalanced relationship go through rough time and revaluation where in person starts to think about their partner and if ego over powers you their your break up is final.
We can say that commitment is the key for balancing your life, living your life, and spending your life. If you balance your commitment for different people in the same fashion they do you will always be happy and free from any sadness. Where there is commitment there is a very less space for ego.