Core Conversations is a team start-up tool designed expressly for teams working across boundaries. It is meant to allow each member of a team to express their boundaries, their capacity, their strengths, their aspirations and their concerns.
Begin with mindfulness. You could use a meditation video/recording (many free on YouTube, including this one recommended by Vijaya – https://youtu.be/lVOE1Ft3knk). You might share the visual below and ask participants where they are on the spectrum today. You might use the Window of Tolerance methodology.