Mentoring is an intentional friendship where a more experienced person guides a less experienced one so that BOTH grow and learn. It is used in the corporate world to maximize the effectiveness of young executives. It has been used informally in the United States Armed Forces to develop non-commissioned officers. In the church we use it as part of the discipleship process.
Biblical examples of mentors include Barnabas who mentored Paul and John Mark. Paul, in turn, mentored Timothy and Titus. Moses, who was mentored by Jethro, mentored Joshua. I these cases leaders are both mentored and mentor others.
Who mentored you? Who taught you the ropes and spoke words of truth and encouragement into your life?
Whom have you mentored? Are you helping another reach their potential in Christ?
Mentoring is a process that requires relationship building. It includes not only words but actions as you model behavior that you want to see replicated in the person you are discipling. It requires patience. Be ever mindful of the Holy Spirit's role in spiritual formation.
If you are a Christian leader (at any level) you are already a role model. Be a mentor, too. Look for someone you can invest time in; someone you can encourage and challenge. Imagine the impact on your ministry if you do this often enough to create a leadership chain reaction.