We can achieve whatever perception we want and therefore have any reality we desire. We are told that we are restricted and squeezed into the limits of a body and the time limits of a life, when in fact we are unlimited and free. The world we see, hear, smell, touch and taste is a creation of our mind.
Our perception of the spiritual dimension will help us understand that we are not in our body but our body is within us. We are not in our spirit, but the spirit within us. We are not in the world, but the world is within us. This is the illusion of matter. A similar illusion is time.