'I was like so bored,' he says. 'I don't like rules or discipline. So when someone said, "These are the best days of your life" I actually thought about jumping off a bridge.'
The X Factor guru, 48, says he particularly hates the way school life seemed so fake.
'I learnt more when people criticised me than when they lied and said I was doing all right,' he tells US mag Parade.
'So I would feel guilty about giving people fake hope when they have no hope.'
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