"It's not like pie in the sky, butterflies and rainbows. It's choosing the opposite end of the logic that you've been choosing," he says. "Logic is what makes a mind set stick over a clichet." 'If there's a far left negative, there has to be a far right positive,' writes David Walliams.'We know that life can go from 100 to zero really quickly,. Right? You know that you could fail out of nowhere.'