You are now to begin a great adventure, a journey out of your mind.
You must remember too that the experience is safe. At the very worst, you will end up the same person who enter this experience.
You must maintain faith and trust in the potentiality of your own nervous system, and a billion year old life process. With your ego left behind you. Your brain can’t go wrong.
In order for your consciousness to flow beyond the confines of the normal body ego it is necessary to undo the bonds which chain you to the external world. To dissolve the imprints whenever in doubt turn off your mind. Relax.