Being full of yourself will kill mentorship

If you are too full, there’s no room for you to learn anything more.  To qualify for mentorship you have to recognize your need for input.

A person who comes with an attitude that they already know as much as the mentor can’t be taught. 

Proverbs 27:7 says, “The full soul loatheth a honeycomb, but to the hungry soul, every bitter thing is sweet.” 

I know that my relationship with a mentee is going nowhere fast when every other word out of their mouth is, “I know,” “yes, I’m aware of that,” and “yes, I already know that.” Some people won't shut up about their qualifications enough to learn from anybody else.
The hungry soul, the one with the teachable spirit, will be filled.