Autobiographies from beyond the grave are rare things, for obvious reasons. One cannot demonstrate a spiritual and mortal coexistence outside the human mind. It's the logical conclusion, eternal life can only exist in an individual's psyche but logic doesn't explain why we are here, the enigma of time and space and people's belief in God.
Soul Man gives a view that breaks many of these self-imposed barriers, opening the mind to possibilities that could exist outside our known universe, a new existence, a new world leading to experiences the likes of which I doubt you will have ever read before.
Optimistic people will tell you anything may be possible,imaginative people will say anything is possible.