From an early age, I believed in the power of positive thinking; I didn’t allow myself to become poleaxed by illnesses, or chronic ailments that carried the potential to afflict other individuals for years. I felt like a human antibiotic because I’d taught myself to think that way: I trusted myself to heal. I believed. And the same attitude eventually powered me into the British military, where I had next-level resilience under pressure. It surrounded me like a force field and I soon learned that if a warrior had relentless self-belief, anything was possible. I’d need every ounce of it once
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