Diane Sawyer refuses to let her rivalry with Katie Couric get out of control. It’s strictly business, she says – nothing personal.

The 58-year-old newswoman tells the February issue of Ladies Home Journal that “all three morning shows have a natural competitiveness.

“So of course, at times, I’m making the call [to get a coveted interview], and she’s making the call, too. But it’s never personal, never,” she insists.

Sawyer also explains why she decided not to have kids.

Married to director Mike Nichols, she says she inherited children from Nichols’ previous marriage – and that making them part of her life was already a full-time job.

“I guess I didn’t feel that [having my own children] was defining for me,” she says.

“I felt we were already a family.”

What does she feel she missed?

“Just to be able to make a roast that didn’t look like some disgusting charred thing. That would be great.”