it makes perfect sense to me now... why it's called "on a high". because nothing weighs you down... no questions, no hesitations, no what if's and whatnot. cutting through the crap... no emotional baggage. like any flight you've ever taken... cruising altitude of 35, 000 feet. for the briefest or longest of travel times, at that height, you are literally... high. save the minute percentage of restless/wicked/workaholics, everyone else has left their earthly worries on terra firma. and if the cabin of your plane did not exist (should the laws of physics permit), you'd inhale the freshest of gases and even need not breathe at all. because all that surrounds you is air... pure, intoxicating, euphoric air.
high on a high...