The following quote is specifically geared towards youth leaders, but I think it applies to any and all discipleship. It was written by Whitney Hopler. The full article can be found here: http://www.crosswalk.com/church/pastors-or-leadership/how-to-keep-your-youth-ministry-focused-on-jesus-11553868.html
Follow Jesus’ example when discipling the kids. Remember how Jesus helped His disciples grow in their faith: He conferred on them the spiritual authority they needed to do the job; He started them out with a doable challenge; He gave them specific boundaries for their responsibilities; He told them to expect God to meet their needs along the way; He told them to look for people who were open to what they had to give; He told them to expect trouble and not be surprised when it came; He showed His trust in them by not shadowing them as they ventured into the unknown; and He helped His disciples debrief their ministry adventures after they returned. Let these same principles guide you as you disciple the kids in your youth ministry.