Learning how you play, and remembering to play as an adult is in my opinions one of the most important things one can do for their mental health. As well as finding great people like Duncan to play with. Life is so short, yet so long and stressful, playing is a great way to remember the miracle that is around us.
Related to playing, feeling shame, and being yourself, but in the context of exploring body movement: https://youtu.be/l0O9wfIdP8w
That guy suggests a way of overcoming shame, by "feeling the fear of god" (apparently a common expression in Israel) and using it as a guide to being present all the time.