James Cracknell talks near-fatal bike accident - video
The Olympian-turned-TV star suffered severe frontal lobe damage after being hit by a truck during an endurance challenge in America, resulting in memory loss, a lack of empathy and a major personality change.
Speaking about Touching Distance, the book he has written with his wife in which the couple each speak frankly about the lasting effects of the accident, Cracknell said: "The thing I really think has made the book better is that we didn't read each other's words until the end.
"I'm quite glad [of that], it would have chipped away at my confidence because hers is much better than mine."
He continued: "I couldn't read what Bev had written about how I've changed, how my relationship with our kids has changed, through her eyes until the book [was finished].
"It's certainly helped me understand a lot more about what she's going through and hopefully I'll adapt my behaviour because of it."
Turner added that she is "really proud" of the book and confessed that it had been written "with [their] children in mind".
She explained: "We've had a hell of a couple of years and the timing then felt just right to write about James's story, everything he'd been through and everything we'd been through as a family."
Touching Distance is released on October 25.