Discipling is an ongoing task. That is both for myself and for others. So for myself I need to be relentlessly pushing forward to know my Master better and follow Him more closely. In dealing with others it means that I can never feel that I have so ministered into their lives so as to have them as the finished article in terms of following our Lord Jesus.
Discipling of course, has everything to do with following a Master. It means learning from that person and imbibing their teachings and lifestyle. In Christian discipling it is critically important that we are not making disciples for ourselves. Our business is to labour into our own lives and into the lives of others so that each are formed in the image of Christ. Paul is speaking about discipling work when he says in Colossians 1:28 that He is the one we proclaim, admonishing and teaching everyone with all wisdom, so that we may present everyone fully mature in Christ.
If we ever think we have made it in discipling, that is in either becoming one ourselves or striving to make disciples of others then we are very wrong. None of us will be the finished article until glory dawns. Whenever I hear someone speaking of not needing further teaching on an issue then I am a little suspicious. We always need further teaching, we all need further rebuking, further exhorting. And we all need a continually good example around us. So becoming a disciple is never done in this life.