I used to be a sumo wrestler in Japan. Yup, I’m not kidding. I lived in Tokyo, in a house with 30 of the strongest sumo wrestlers in the world. We did everything together: lived, trained, and ate. My time in the sumo house has taught me a lot. Not only how to become a good sumo wrestler — or how to gain 11 kilos in six weeks — but also the mindset to be successful in your professional career. I could write a whole book on why sumo wrestlers make amazing colleagues (which I actually did), but I’ll just…

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