There are two types of integrity. The first means that you do what you say you will do, to yourself and to others. This could be seen as just being reliable, but if it is done as a matter of principle, then, for me, it falls into integrity, rather than reliability.
The second is living by your values and beliefs. This is being kind, even to those who treat you badly. It is finishing what you started, because you always do. It is a path less travelled, but an honourable path to walk down. In a social media filtered, fake it til you make it culture, living by your values and beliefs is unusual, but essential.
The Fullfilment Project 