Matthew 4:19 And he saith unto them, follow me, and I will make you fishers of men.
Peter and Andrew did follow Jesus, and they did became fishers of men.
Learning to fish takes time; it took the apostles three years of training under the Master. Have you been learning fish? if you haven't, then start following Jesus. He is the greatest fisherman of them all, and he will train you, if you let him.
If you already know about fishing, then please come over into this vast ocean of humanity, and help us to fish them for him.