Re: How do you train/achieve nothingness?
IMHO, one of the distinctions I like to offer is that there are things in life that are a "make" and there are things that are a "let".
You can't "make" someone love you, but you can "let" them. Love is a "let".
Spontaneity is a "let".
Mushin, no-thing-ness, is a "let".