To keep doing something and yet not having any results can be summed up in one word, and that futile.
Not only is it futile, it is also annoying, to say the least.
So, for the person(s) doing that something which is futile, and for the person(s) looking at it, both parties will have the same annoying feeling.
So we can imagine how annoyed were Peter and the rest of the disciples who went fishing but caught nothing that night.
We can be sure that they lowered the nets time and again throughout the whole night but still caught nothing.
But when Jesus stood on the shore and called out to them, something changed.
They caught so much fish that they could not haul it in, and there was even breakfast when they came ashore.
Indeed, without Jesus, the situation will be futile and annoying.
But with Jesus, everything will be fruitful, and there will be rejoicing.
Let us always call upon Jesus in whatever we do, so that He will bless the labour of our hands and that we will bear fruits of rejoicing.