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Psychology, philosophy and art >> Actually this only true of art, music, dance, and singing. You can do these things yourself for yourself, as well as for the benefit of others. The arts are proven to be very healing. Philosophy and psychology not as much...personal opinion based on 50+ years of escaping to the arts...and only an aside of not much worth from psychology. If you disagree... keep it to yourself.
When you fall sleep while over thinking, the mind remains active as if you were still awake, which is why you wake up tired.