But this is untrue.
The Kabbalah (Jewish mysticism) tells us this:
"The greater you are, the more you need to search for your self. Your deep soul hides itself from consciousness. So you need to increase aloneness, elevation of thinking, penetration of thought, liberation of mind - until finally your soul reveals itself to you, spangling a few sparkles of her lights.
"Then you find bliss."
How to do this? Strip your body from your soul, as if you do not feel that you are clothed in matter at all - you are entirely soul. By sitting in silence and achieving the calm of deep sleep while conscious, you achieve conscious immortality, which the Bible calls Holy Spirit.
Meditation, oneness, Self-realization, Holy Spirit. The names may be different, as are the religions that propound them, but the state is the same. It is who you are, and the Earthly life is the place to realize your true nature, and the time is now.
It is said that in this quest for the Self that lies within, a teacher can be helpful, as are books. But most important of all is your power to turn your attention away from the world of the senses and in quiet concentration fix your awareness within. Be as you are.