The as-yet untitled book is due out in 2014.
In a statement released by Grand Central Publishing, an imprint of Hatchette Book Group, publisher Jamie Raab said Roberts's story was "both dramatic and inspiring, and will capture the incredible spirit that has endeared her to all of us who have followed her remarkable career and life.”
Roberts, 52, took a leave of absence from the GMA desk last year while she underwent a bone marrow transplant to treat myelodysplastic syndrome.
"I am humbled that many have an interest, and draw strength from my on-going journey," Roberts said, adding that she is "grateful for the prayers and well wishes of so many people."
Roberts received a Peabody Award Monday for her work on GMA. She is the author of the New York Times bestseller "From the Heart: Seven Rules to Live By."