Final answer:
Joan is exhibiting deepening self-awareness as she recognizes her feelings of being threatened by a new graduate are not due to his intentions, and she plans to offer him guidance.
Step-by-step explanation:
Joan, the nursing unit manager, has taken the time to self-reflect and discuss her working relationship with Thomas, a new graduate, with her colleagues. Through this introspection and conversation, Joan discovered her initial discomfort with Thomas's new ideas and approach was partly due to feeling threatened. Joan's realization that Thomas is not challenging her authority but is simply attempting to establish his own role in the unit, and her subsequent decision to provide him with guidance, coaching, and affirmation, shows that Joan is demonstrating deepening self-awareness.