Psychological safety is an important topic, and it is great to see it getting more traction lately. I actually attended a day long training session on it earlier this month.
As you have demonstrated through your post, I feel that an essential element of fostering psychological safety is by actually enacting it through the micro interactions that we have each day. Sure, it’s also important to talk about it broadly and to set the culture and expectation from the top down. However, in my experience it is the very subtle conversations and cues which serve to either establish or undermine it. While this is important amongst peers, it is especially important for people in a position of authority or power.
Having said all that, I acknowledge how challenging it is to maintain a congruent message and actions at all times, even for an individual let alone an organisation. So, for me, it comes back to us each being mindful in every moment and every interaction that we are having. To deeply listen, and to act with empathy and fairness.
Regarding your question about values, a coach I was working with recently who introduced me to StrengthsFinder, also had me work with this list of values and to whittle it down to my top three: https://www.stevepavlina.com/blog/2004/11/list-of-values/
Mine ended up being: Connection, Creativity, Responsibility . I’d be keen to hear how you find the exercise if you give it a go.