John 21:4

John 21:4 says, But when the morning was now come, Jesus stood on the shore, but the disciples knew not that it was Jesus.  The disciples had been fishing all night.  They had caught nothing, which had to add to their frustration.  Though they had seen the empty tomb, and Jesus had appeared to them after the resurrection, they were seemingly still at a loss as to what they should do next, and weren't even successful at what at least some of them had done before.  They were no longer looking for Jesus, but He was there on the shore. When we are in doubt about what to do next, we need to look to God for direction.  Verse five says, Then Jesus saith unto them, "Children, have ye any meat?"   And they answered Him, "No."  These were grown men, but they were followers of Jesus and children of God. As His followers, when God calls to us, it as His children, not as anything we were before.  He will not leave us in doubt and confusion if we only listen to Him.  Jesus asked if they had caught anything.  When we are off, doing our own thing, God is always going to be questioning us about how successful we are by going our own way.  There is always going to be a sense of a lack of fulfillment when we are not looking to God for direction.  We cannot follow God as we should if our focus is on the world.  It must have been even more frustrating for the disciples to have to admit their failure even at fishing.  There was nothing sinful about fishing, except it wasn't what Jesus had called them to do, and they were doing it by their own design.  There are many things today that are not sinful, but if we are doing them without God's leadership then they are wrong.  We must do everything under His leadership if we are to be faithful followers.