Jill Johnson, jpistudios.com
Denise's first book, It's All About Him: Finding the Love of My Life details the ups and downs of her relationship with her husband of more than 33 years. It debuted at No. 1 on the New York Times best-sellers list.
"It's been great for [my daughters] to see her do something out there that's not typical for a parent at all," says Alan. "But she's a great role model for them anyway and always has been, whether she did anything professionally or not. I could see it in their eyes that they were surprised -- very surprised, and I could see them with interest looking at her, thinking it was special for her to do that. It was a very good thing for the kids to see that."
Denise is also the author of The Road Home, a religious book that inspires readers to look to God for help during dark times. Her husband hints that a similar book, based on her battle with cancer, may be in the works soon.
"I can't really speak for her, but she has felt like she wants to write something about what she just went through with this, because it's such a tough experience," the singer-songwriter tells The Boot. "She drew from her faith to help her get through that, and I think she feels strongly about trying to do something with that, eventually."
Alan and Denise were high school sweethearts. The country icon pays tribute to his better half in one of his most beloved hits, "Remember When." (Watch the song's video below.)
"I don't care if it's somebody that seems compatible or your soul mate ... you have to work at it all the time," Alan says of his marriage. "I always find that most times you treat strangers nicer than you do somebody that's close to you, and if you learn to do that, that makes a big difference."