Consciousness is a pattern of electrical energy in your brain. Electrical energy is made possible by virtual photons (virtual photons are the carriers of electromagnetism). Now comes the jump. Virtual photons are excitations of the luminiferous aether, described with wave-functions. The luminiferous aether is spirit. Believe me or don't believe me as you wish. It won't change the outcome. When you die, you may experience the tunnel of light, family and friends who have died, luminous beings and heavenly bliss; these are documented experiences. And either it will continue as you become a spirit ... or you will cease to exist. What you believe will not change the outcome. So believe whatever gives you peace.