Vulnerability is based on mutuality and requires boundaries and trust. It's not oversharing, it's not purging, it's not indiscriminate disclosure, and it's not celebrity-style social media information dumps. Vulnerability is about sharing our feelings and our experiences with people who have earned the right to hear them. Being vulnerable and open is mutual and an integral part of the trust-building process.
-- Brene Brown, Daring Greatly, p. 45