"How many a man has thrown up his hands at a time when a little more effort, a little more patience would have achieved success."

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I actually think being an entrepreneur is a state of mind. If you're going to be an entrepreneur, my thesis is that you have to sacrifice everything for some period in your life to be successful. You have to be myopic and completely focused and unbalanced in every way. Once you've achieved success, you're free to do whatever you like.

— Kevin O'Leary