...By reaching a breaking point. When someone is backed into a corner in the Metaverse and makes a decision to discard the idea of keeping your head down and fight back, even if it means rebelling against society's expectations, they'll hear their Shadow's voice. The Shadow encourages them to accept their rebellious will, and agreeing allows them to Awaken to their Persona.

It's...a difficult process, both physically and emotionally. We didn't have to face our Shadows directly, but it's not something that can happen if you don't accept the truth of the world and who you really are.