You cannot be a disciple all by yourself. If one person is missing, the whole is incomplete. Jesus says the last day will not arrive until the gospel has been preached throughout the whole world. Only when all the elect people have been gathered together will they be fully remade.
But this is not all. The universe will also be restored. Eschatological discipleship is spiritual formation in the kingdom of heaven. The reason we are able to follow Jesus is because the kingdom of heaven has come. Thereafter, we are citizens of it.