The research

A growing body of research shows how opening up about ourselves can be a healing and empowering experience.

Emotional Intelligence and Healing Hidden Wounds. (PACES Connection)

“Reconsolidation means the brain can change painful memories and their related emotions if we bring all aspects of the memory into full awareness. This principle is utilized by nearly all of the effective treatments for post-traumatic stress disorder. For example, if one tells one’s story to a respectful, compassionate witness, now respect and compassion begin to replace the shame that is stuck in the painful memory.”

Revealing is Healing. (Psychology Today)

“Allowing others to see what you're ashamed of […] builds intimacy and trust, cornerstone virtues in healthy relationship.”

The Power of Vulnerability. (Brené Brown)

Just watch it, and watch her other videos, and read her books. I think she has a podcast too.