There is no heaven and there is no hell. They are not geographical, they are part of your psychology. They are psychological. To live a life of spontaneity, truth, love and beauty is to live in heaven. To live a life of hypocrisy, lies and compromises, to live according to others, is to live in hell. To live in freedom is heaven, and to live in bondage is hell.
You can decorate your prison cell beautifully, but that makes no difference, it is still a prison cell. And that's what people have been doing, they go on decorating their prison cell. They give it beautiful names, they go on painting it, putting new pictures on the walls, arranging the furniture in new ways, purchasing more and more things -- but they live in prisons.
Your marriage is a prison, your church is a prison, your nationality is a prison. How many prisons you have created! You are not living in one prison, your prisons are like Chinese boxes: a box within a box within a box within a box, it goes on. You are like an onion: peel it, another layer, peel that, another layer. Destroy one prison and you find another inside. This is what hell is.
To reach the very core of the onion, where all layers have been dropped and there is only nothingness in your hands, that is freedom, nirvana, bodhichitta. The consciousness of a buddha, the pure consciousness of a buddha, that is heaven.