Mentors — even highly successful ones — are more accessible than you think they are. So seek them out. Identify the people who have climbed the mountains you want to climb before and cold call them. They are accessible because mentoring is a form of therapy; we can’t give advice to our younger selves, so instead we give advice to younger people and it feels good.
My daughter comes home starving. Taking 10 minutes to make her a snack makes both of our days. She could totally do it herself and I could totally keep working but which 10 minutes am I going to remember? Which will she remember?