The rule requires you to spend 33% of your time with the people you can mentor, a third with those on your level, and a third with people who can mentor you.
And there is greater reasoning behind spending time in such proportion.
– As a mentor you keep helping people, and feel gratified.
– As a peer you also enjoy your success with equals and
– last but not the least, as a student you keep yourself challenging and out of comfort zone by staying with your mentors.