Let your mentee feel that ideas are theirs and, to balance the power, ask for ideas or advice.
Let your mentee do a great deal of the talking. Listen to their accomplishments. Mention your achievements only when asked.
If you’re upset about something your mentee did, don’t show anger and emotion. Instead, approach problems with patience and the desire to get along.
If you are wrong, admit it quickly and emphatically. Admitting one’s errors reduces guilt and defensiveness and helps solve problems created by the error.