This was Jesus’ method. He looked for those whom the Father was already at work within their hearts. He knew God was working in them because they were interested to learn about God. Also note, a person doesn’t have to be a Christian for you to disciple them. Some of His early disciples were not converted when they first began to follow Him. Peter had been following Jesus for weeks before he was converted. This is clear in a harmony of the gospels. John 1 happened quite sometime before Luke 5 when Peter is converted.

Don’t be success oriented. Be kingdom oriented. Live with the kingdom in constant view and leave the results with God. Not everyone will be saved. Most will not. But the results will happen. Eventually someone will come to know the same joy you have in your Savior. Go ahead acknowledge your fear, because fear can bring dependence upon God. Ask the Lord to fill you with His Spirit and anticipate God’s strength.