A psychology professor and Lambeau's former roommate who serves as Will's therapist. Unlike previous therapists, Sean effectively breaks through Will's defenses by sharing personal stories and directly confronting his fear of abandonment and failure. His consistent empathy and the mantra 'It's not your fault' catalyze Will's emotional breakthrough, leading to his personal growth and eventual departure.
Sean acts as Will's primary psychological guide, breaking through his defenses.
A long-standing personal friendship connects the two mentors.
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