WE ARE IN THE SPIRITUAL WORLD NOW
Many people falsely believe that they will only go into the spiritual world when they die or leave this physical world.
The Truth is that we already are in the spiritual world.
As a human being, it is normal to have changes of spiritual state but our home in the spiritual world is the state to which we return regularly. This is where we are in the spiritual world.
This home of ours in the spiritual world is built from our state of consciousness and its associated beliefs and loves.
If we believe that the universe is a cruel place and we are continually in a negative state, we should not expect to be in Heaven when we die.
Instead, we should change our beliefs and attitudes and begin to move towards Heaven NOW.
In the New Testament we read: " In my Father's house are many mansions: if it were not so, I would have told you. I go to prepare a place for you. And if I go and prepare a place for you, I will come again, and receive you unto myself; that where I am, there ye may be also." Matthew 14:2-3
Our true place in the universe is in in the sixth dimension of reality where everything is unified into the harmony of Heaven or the Divine Human.
What are the mansions in Heaven made of? Swedenborg, who could see into Heaven says this:
I have seen palaces in heaven of such magnificence as cannot be described. Above they glittered as if made of pure gold, and below as if made of precious stones, some more splendid than others. It was the same within. Both words and knowledge are inadequate to describe the decorations that adorned the rooms. On the side looking to the south there were parks, where, too, everything shone, in some places the leaves glistening as if made of silver, and fruit as if made of gold; while the flowers in their beds formed rainbows with their colors. Beyond the borders, where the view terminated, were seen other palaces. Such is the architecture of heaven that you would say that art there is in its art; and no wonder, because the art itself is from heaven. The angels said that such things and innumerable others still more perfect are presented before their eyes by the Lord; and yet these things are more pleasing to their minds than to their eyes, because in everyone of them they see a correspondence, and through the correspondences what is Divine. (Heaven and Hell 185)
Everything that we experience in the spiritual world, including our home, is a projection of our inner being or state of consciousness. And so these mansions are so beautiful because they correspond to Divine Truth and Goodness.

HOW DO YOU KNOW IF YOU ARE IN HEAVEN?
Those who are in Heaven love the Truth. They bring everything out into the open.
Those who are in Heaven are in Heavenly Joy and want others to be as joyous as they are.
Those who are in Heaven continually forgive every one and themselves.
Those who are in Heaven derive their joy from being creative, giving and useful to others and God.
Those who are in Heaven want others to be as healthy as they are.
Those who are in Heaven want others to be as wealthy as they are.
Those who are in Heaven really love others and God.
Those who are in Heaven know that every Good that comes to them is from God.
Those who are Heaven never worry because they have perfect faith in Divine Providence.
Those who are in Heaven are never afraid because they know that only those who want the Good of All are in Heaven.