Humility is one of those traits that is so out there on the spectrum of human emotion and character. It goes against so much of what we have come to know about being a growing, successful person. Especially when we look at culture, humility seems to only be used as a tool to look better, which is one of the greatest flips that can be done.
This is a matter of ethics; how we ourselves treat others. Humility is one of those virtues that scales. It works in a marriage between two people. It works at your job. It works in society. It scales.
Additionally, it is one of the founding principles of the Christian faith. Humility is what gets us out of our heads and into the lives of other people. We can’t adequately love other people if we want to have them known how great we are through their lowly situations.
A dictionary would say that humility is a lowly-sense of yourself, especially having the perspective of there being other people outside of yourself. However, I would be tempted to say that it is more like the knowing the existence of our own shortfalls and weak spots in life when we are made aware of other peoples.