What does the Quran say about laziness?

I have to admit I am not the most diligent person. Not to brag, but I am pretty smart, but I am hell of a lot lazy. And I end up procrastinating a lot. So I ask what does the Quran say about it? Also does any one have any tips on how to combat it? (Can I just blame it on the Shaitan? ^^;)
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