I thought parachuting would cure my fear of heights. I jumped three times, one year apart, but the fear is still there. I still feel queasy when looking over a balcony, or walking on the roof tiles.
In my day we jumped solo, not tandem as they do today. On my last jump we had to stand on the aircraft's wheel (the pilot applied the brakes) and hang from the wing strut. Strangely that was easier to do than just pushing myself out the door.
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"No friend ever served me, and no enemy ever wronged me, whom I have not repaid in full."