But, don't resolve to eat anything but kale all month just yet. According to research by the psychologists at the University College London, it takes about 66 days to create a new habit. So, that means sticking to your plan until early March — and not just your diet. This includes limiting your smoking, drinking, caffeine, sugar — or any other pesky habit you're trying to break. And, experts say you have to adopt an all-or-nothing attitude if you really want to make a life-long change — there's no such thing as easy street. Check a detailed analysis for your vice here and remember this: Play hard. Work harder. (BBC)
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