Gregory Slayton's Be a Better Dad Today! has sold almost 65,000 copies in 2012—making it the best-selling fatherhood book in the U.S. in more than 10 years, according to the book's publisher, Regal Books.

The book was also ranked No. 2 in the Evangelical Christian Publishers Association's top 50 Christian titles for last year, following Sarah Young's devotional Jesus Calling (Thomas Nelson) on the list that tracks sales from Christian retailers exclusively.

Detailing 10 tools of fatherhood, Be a Better Dad Today! drew rave reviews from former Florida Gov. Jeb Bush, Kansas Gov. Sam Brownback, Arizona Sen. John McCain and Connecticut Sen. Joe Lieberman among others. Release last April, the book is now in its third printing, and plans are underway for a Fire Up Fathers program with churches nationwide for Father's Day.

Be a Better Dad Today! has filled "a huge unmet need in our country," Slayton said.

"There are tens of millions of dads in America who want help on the fatherhood front, but don't know where to turn," he added. "Guys know that the right tools are key to getting any job done right. The style of the book is positive and encouraging, because with the right tools we can all be better dads."

Click here for more information on the Fire Up Fathers program.