Jesus told his disciples that, like a vine is planted to produce grapes, he chose them to ‘bear fruit’. Typically, Jesus leaves it to us to work out what that fruit might be. He went on to say that as a gardener prunes and trims a vine to increase its yield, so God helps us to be as fruitful as possible.
As individuals, we need to consider what parts of our lives are fruitful and what are not. We need to be prepared to prune and trim the unfruitful areas so the fruitful ones can flourish. This does not come as a punishment from God. He wants us to be the best that we can be.