Last week (ends18SEP05), the couple shocked fans when they announced they were seeking to annul their marriage just four months after exchanging nuptials in the Caribbean.
And Chesney admits he struggled to balance his personal life with his hugely successful career.
He tells Country Weekly, "I'm all right. I'm good. There have been better times, but I'll be okay.
"I hit everything so hard this year. I had the biggest tour I've ever done, I had a record to finish that was real important to me, and, of course, I had something new in my personal life and I was trying to do that too. It really ended up being too much.
"I'm tired right now, but by next year, I'll be excited to get back to it. And it'll be about the music again, not about the sideshow."
In court papers, Zellweger listed "fraud" as the reason for the break-up.