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The difference between an amateur and a professional is in their habits. An amateur has amateur habits. A professional has professional habits. We can never free ourselves from habit. But we can replace bad habits with good ones.

"Turning Pro: Tap Your Inner Power and Create Your Life's Work". Book by Steven Pressfields, 2012.
The difference between an amateur and a professional is in their habits. An amateur has amateur habits. A professional has professional habits. We can never free ourselves from habit. But we can replace bad habits with