Being a disciple is simply being a follower.
For a Christian, this means we are a disciple when we follow Jesus Christ. He has a heart for the lost, last, least and lonely. When we follow Jesus, our heart begins to change to have the same concern.
The process of growing into this lifestyle is called discipleship. It is simply a matter of being willing to continue following him through worship, prayer, the reading of God’s Word, fellowship, and other spiritual practices.