For Glenn Hoddle the biggest challenge in his life happened away from the football pitch.
Speaking in the second part of "Inside Matters", a series of exclusive interviews with football stars about the mental challenges they have faced, Hoddle reveals how he handled his near-death experience, which he calls his biggest challenge.
"It was a shock and that took a lot of getting over, I must admit," he says. "When it's your health, that's the most important thing in life, really."
"[There was] a lot of support from everyone from around me, from the medical side of St Bart's Hospital.
"But in the end, there's moments when you have to drag yourself out - the walks I had to do to get some fitness and to get the confidence back, it was a massive challenge, it really was."
Hoddle found that his competitive spirit from being a player and manager helped to aid his recovery.
"It came from within, the emotions, the strength I brought from within myself to say I was determined, that I was going to do what I had to do, to do what the medical side were telling me.
"I had this determination that if I had to walk, I had to walk and, my word, I’ve never known tiredness like it, just doing my walks every day.
"Even if it was 500 yards to begin with, eventually I got up to four miles, and it just shows you with the determination, and a little bit of time and healing, that you can overcome these things."
Hoddle also reveals how he saw out a difficult start as manager at Chelsea and how he recovered from the anguish at England's exit from the 1998 FIFA World Cup.
Part 1: Inside Matters: Shearer on dealing with recovery
Part 3: Inside Matters: Schmeichel - I didn't dwell on mistakes
Part 4: Inside Matters: Owen - I almost wanted to just hide inside
Part 5: Inside Matters: Fowler - Self-belief helped me through hard times
Part 6: Inside Matters: Hargreaves - I felt like it was taken from me
Part 7: Inside Matters: Cole - Some days I struggle to get up
Part 8: Inside Matters: Keeping perspective key for Dixon