If critics and competitors can't match your results, they will often denigrate the way you achieve them. Fast, intuitive types are called lazy. Dedicated burners of the midnight oil are called obsessed. And while it's obviously not a bad idea to hear and consider the opinions of others, you should be suspicious when these criticisms emerge right on the heels of success.
How Life Imitates Chess: Making the Right Moves, from the Board to the Boardroom (ed. Bloomsbury Publishing USA, 2010) - ISBN: 9781596918276