Barbara Eden “doesn’t think” about ageing. The 93-year-old actress achieved global stardom in the 1960s when she was cast in the title role of the NBC sitcom ‘I Dream of Jeannie’ – which served as a rival to ABC’s ‘Bewitched’ – but all these decades later has admitted that it is “important” to keep busy above all else. She told Fox News Digital: “I don’t think about it. would guess that a shrink would say that I want to be productive and not sit on a shelf and do nothing. I think if I wasn’t doing what I’m doing, I would go out and find a job just to keep myself going and be part of civilizati…