Some Christians reject any belief in life after death as it lacks empirical evidence
They think in terms of living in such a way as to bring heaven on earth
Others think of judgement, heaven and hell as products of the human mind
Hell= unhappiness
Heaven= joy
A life lived in accordance with one's convictions is spiritually fulfilled and so the individual experiences joy, etc- the opposite is true for one whose life is one of inner conflict and this may lead to the need for psychotherapy