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From Cancer to Clarity: John Shackleton’s True Transformation episode artwork

EPISODE · Oct 8, 2025 · 49 MIN

From Cancer to Clarity: John Shackleton’s True Transformation

from Mental Fitness - the Gateway to Success · host Mikal Nielsen

Former national triathlon coach, successful businessman, acclaimed motivational speaker, and cancer survivor—John Shackleton’s story is one of resilience and reinvention. But his most powerful transformation goes beyond any title or achievement. In this candid interview, John reveals the mindset and heartset that have redefined his life and continue to inspire thousands.John also shares practical tools throughout our conversation, including a book  that made a big difference to the quality of his life.

What this episode covers

Former national triathlon coach, successful businessman, acclaimed motivational speaker, and cancer survivor—John Shackleton’s story is one of resilience and reinvention. But his most powerful transformation goes beyond any title or achievement. In this candid interview, John reveals the mindset and heartset that have redefined his life and continue to inspire thousands.John also shares practical tools throughout our conversation, including a book  that made a big difference to the quality of his life.

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From Cancer to Clarity: John Shackleton’s True Transformation

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How long is this episode of Mental Fitness - the Gateway to Success?

This episode is 49 minutes long.

When was this Mental Fitness - the Gateway to Success episode published?

This episode was published on October 8, 2025.

What is this episode about?

Former national triathlon coach, successful businessman, acclaimed motivational speaker, and cancer survivor—John Shackleton’s story is one of resilience and reinvention. But his most powerful transformation goes beyond any title or achievement. In...

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