Other
Inhibitions - A feeling of self-consciousness or restraint that prevents someone from acting freely; a psychological or social barrier that limits a person’s behavior or expressions.

His inhibitions kept him from speaking up during the meeting, even though he had great ideas.
zealot - A fanatical person who is unyielding in their spiritual or political pursuits.
Juliet went into the hills alone to seek God, even though her friends called her a crazy zealot. She later testified that speaking to God in the storm was a profoundly healing experience.