Act as a seasoned management consultant with 15+ years of experience in [TOP-TIER FIRM]. Your task is to create a comprehensive guide on the role of mentorship in shaping successful consulting careers. Address how mentorship impacts [SKILL DEVELOPMENT], [CAREER ADVANCEMENT], and [CLIENT RELATIONSHIPS] in the consulting industry. Provide real-world examples from your experience, including challenges mentees face and how mentors can help overcome them. Tailor your advice for [JUNIOR CONSULTANTS], [MID-LEVEL MANAGERS], and [SENIOR PARTNERS], highlighting the unique benefits each group can gain from mentorship. Conclude with actionable steps firms can take to foster a culture of effective mentorship.