He was diagnosed with colon cancer at 31 and told he might not survive. He's now 59 and healthy.

"I was given a 60% chance of living for five years. Nearly 30 years later, Leeson has undergone at least 10 colonoscopies since the surgery as preventive follow-ups. He's had no recurrence of colon cancer, and says that living a full life after cancer is about having the right mindset."

"You become very aware that there are things in your life you can influence and things in your life that you can't influence. If you are diagnosed, you can't influence the fact that you've been diagnosed and that you have it. What you can influence is how you move forward from that point."

"While serving time at Tanah Merah prison, Leeson was diagnosed with colon cancer. The symptoms began with dizziness. Eventually, the tumor in his colon grew so large that it collapsed one of his lungs, and he underwent immediate surgery in 1998. The doctors removed a mass nearly the size of a softball."

Nick Leeson, responsible for Barings Bank's 1995 collapse through unauthorized trades exceeding one billion dollars, was imprisoned in Singapore where he was diagnosed with colon cancer. His tumor grew large enough to collapse one of his lungs, requiring emergency surgery in 1998 to remove a softball-sized mass. Initially given a 60% five-year survival chance, Leeson was released from prison in 1999 and has remained cancer-free for nearly 30 years through regular colonoscopies. He attributes his successful recovery to maintaining the right mindset, distinguishing between uncontrollable circumstances and controllable responses, and emphasizes the importance of preventive medical checkups.

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