Beautiful question, Edwinoel.
From my experience, I don't have a spirit -- I am spirit, and have a body.
Every time ego left me, spirit (my true self) woke up. Miracles happened. I felt the loving arms of God wrap around me.
I have come to understand that the purpose of God creating Homo sapiens is so that we have a temporary "blackboard" on which to write our thoughts -- a temporary continuity of consciousness.
Christ said that we need to give up being first (ego) and be last (humble). When we do this perfectly, completely and continuously, then we are free of the burden of physical reality. We can see once again without need of physical eyes, and think once again without the need for a physical brain. We become, once again, children of God, created in His image and likeness -- and He is not Homo sapiens.
Christ said that our gift is everlasting life. What does this mean? Since continuity of consciousness is a measure of existence or life, then when we die, if we have no more continuity of consciousness, then we have ended that life as a physical being; but if we keep continuity of consciousness past physical death, then we have died as a spiritual being, and have been born again of the spirit.
Too often have I spent time in the bardo (between lives) in a chaotic confusion, not understanding who I was or where I was. I hunger for the calm peacefulness of God's love. That means, I need to be love. I need to be 100% responsible for the actions of others, for only then can I be at-one with God and effortlessly turn the other cheek.