great info. I just add one thing i found extremely helpful once i actually mastered it. Master this and you can master the deepest benefit of meditation at will and within a split second.
When you meditate, have your mind totally clear.. think of nothing, without trying to think of nothing. the first time you really understand and master this , it increases your awareness massively and with it being a learnt process, you can end up being able to hit that spot at ease.
And that opens up the door for even greater experiences.