I've always tended to live my life with 4 core values.
Now these are the same core values that the YMCA promotes and given I spent a lot of my K-12 years there, it comes as no surprise to me that they stick with me to this day.
I would consider them guiding principles that help me interact with others and know what my own boundaries are. When I have let one of these values down, it is by far the worse feeling in the world. They help ensure I make the best decisions I can and understand where others are coming from.
I think diving deeper into each one as a writing exercise would be good to reflect on how they have affected my life.