Recently I purchased several audio books about Jose Silva. For those of you who don't know who he is check out his website here. He is known for the Silva Method. https://silvamethod.com/ I have been practicing for a week now. There is a centering method and it progresses in three steps. The most difficult part about the meditation is staying awake. How I have overcome the urge to sleep is to not lay down. Sit on the floor with my legs crossed or in a position that will create an urgency for me to shift my body. (Think your leg going to sleep, OUCH). This form of meditation is with your eyes closed so you do not want to be driving and/or operating machinery. Yeah, right! That sounds like a funny book title somewhere there. Mr. Silva was an interesting man who has passed over into the continuation. If you are new to meditating check it out.