Without enthusiasm you are doomed to a life of mediocrity, but with it you can accomplish miracles.

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Discipline is doing what you hate to do, but do it like you love it. ― Mike Tyson

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Depression is merely anger without enthusiasm. ― Steven Wright

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Enthusiasm is common. Endurance is rare. — Angela Duckworth

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Fill the day with enthusiasm. Give the day all you've got and it will give you all it's got, which will be plenty.

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Everyone that you fight is not your enemy and everyone who helps you is not your friend. ― Mike Tyson

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He was very vindictive and always out for revenge. He couldn’t live without enemies, so he created them. ― Mike Tyson

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Experience and enthusiasm are two fine business attributes seldom found in one individual.

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Everyone has a plan until they get punched in the mouth. ― Mike Tyson

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Enthusiasts soon understand each other.

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