The Golden Frog gives you a real life experience of what a person goes through as they attain enlightenment.  You share with the characters their day to day life, their joys, challenges, and frustrations as they attain enlightenment and live life on that level.  You come to intimately understand the resistances along the way and how they are overcome.  If you'd like to know not the glamorized version, but the real world of human evolution, then you will find The Golden Frog invaluable.