The most profound book I have read in the last few years was “Trust” by Stephen Covey (and I read a lot). It blew my concept of trust away. I always knew trust started with oneself and boundaries but didn’t truly understand the different levels of trust one could extend to others. One of things that struck a chord, was that it looked at the integrity of people (me and others). A person may have a history of demonstrating a particular behaviour that is not in agreement with your values. So you can trust this person to continue with this behaviour and have appropriate boundaries (a different take on trust). But in other areas, this person may be in complete accord with your values, and in those areas, you can extend different types of boundaries. It also gives pratical tips for people on how to improve their integrity so they can trust themselves more and so others can trust them more.