Dr. Vernon Neppe has created many excellent videos about this reality of ours. I have listed one of my favorites.

     https://www.youtube.com/watch?v=0rVxzHk---0

 

 

I have used Marijuana in the past with some favorable results. It isn't really necessary but can allow an easy entry into a fully relaxed state. When you achieve proficiency entering a clear-minded state, it can easily be put aside.

     https://www.youtube.com/watch?v=WiDo7Ps9XNk