You can learn useful entrepreneurial skills in all sorts of odd places. My training ground was the streets of Sweden, going door to door as a teenage evangelist. What I learned there was resilience, persistence, and self-belief. No matter how often I got turned away, no matter how badly I crashed and burned, I always found the strength to keep going on to the next house and keep pitching. Since leaving the religion, that mindset has stayed with me, and it’s been a core element in the way I approach business. Deal with rejection, no matter how brutal I was…

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