Mentoring isn’t about telling the person what to do, it’s about leading them to realize the thing you’re teaching on their own.
I'd take this a step further. Depending on how similar the career tracks are for the mentor and mentee, mentors often won't or can't know the right answer for the specific situation the mentee is in. As a mentor, your role isn't necessarily to have the answer either, it's just to help them figure it out for themselves one way or another.