Once we accept the fact that body, heart, and mind are inseparable, we can become free of the struggle to make the mind, spirit, or soul remain active after the body stops working. Everything is interconnected, and after death no part of us stays as it was. You may go to heaven, paradise, or hell, or be reborn into this world with the deepest, unknowable part of yourself, but it is extremely unlikely that any part of your body or mind will be brought with you as it now is.
This realization, of course, may initially cause a great deal of angst. However, we all need to start with the acceptance of its truth. Only after we fully face, take up our abode in, and make peace with this existential reality, can we become liberated. As the sutra says, “Avalokiteshvara…frees all from anguish.”
From The Heart Sutra: A Comprehensive Guide to the Classic of Mahayana Buddhism by Kazuaki Tanahashi, pages 11–12