Suzy Welch: Mentors don't have to be older or senior

Both at the beginning and during the course of our careers, many of us have heard the recommendation to find a mentor. As a rule, a mentor should be an older or senior colleague from the same or similar field with whom you should keep in touch and to whose advice you should listen in order to develop your own career. But hasn't this idea of ​​mentoring already become obsolete?