The goal of the spiritual path is mysticism, which could be described as the gateway to Enlightenment or the Real World. Enlightenment is when the mind has been emptied of all concepts and beliefs, leaving only the pure Knowledge of our Christ Self in union with God.
As one sinks deeper into mysticism, the ego's voice will get louder and more vicious, throwing up lots of future fear thoughts to keep the mind from continuing it's journey into Stillness. The ego has no existence in the Stillness of Christ, and so all fear is really the ego's fear of nonexistence. For this reason, trust in the Holy Spirit is key, and will guide you through the layers of ego resistance again and again, until the ego has been released from the mind entirely.
This talk from David took place at a gathering in Danville, KY on April 26th, 2015.