Yes, focusing would be related, and it certainly seems like an excellent technique, but it's not quite the same thing. Focusing is particularly oriented towards bodily sensations, whereas I'm talking about experiences in broader terms, including but not limited to the body. Focusing is also a bit more passive (waiting for thoughts to occur to you) and less oriented towards art & expression. Focusing is also more oriented towards words, whereas I talk more broadly about other means of expresion. And of course the underlying philosophical frameworks are also different.