Last Saturday morning, Mo Gawdat, former chief business officer at Google, was on the radio explaining his algorithm for happiness, apparently a publishing sensation. Happiness, it seems, is equal to or greater than the events of your life minus your expectations of how life should be.
That was a tricky proposition for the 20,000 of us on the way to Cheltenham Festival’s trials day likely to have a few bets and facing a fiendishly difficult racecard.

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