The Australian television presenter, who is best known for her role on current affairs show Today Tonight, will tell all in the book about her battle with aggressive stage three breast cancer.
Obermeder has "insisted on writing every word herself", according to The Daily Telegraph, and will talk about her diagnosis, the effects of chemotherapy and juggling her cancer treatment with caring for her baby daughter.
She was reportedly told recently that she has to undergo an extra three months of chemotherapy to fight the illness, after being hospitalised due to an infection last month.
The book is scheduled for release in November this year and is being published through Allen and Unwin.
Obermeder was diagnosed with breast cancer just one day before the birth of her daughter Annabelle in October.
At the time, she said: "You never think today will be the day that someone says you have breast cancer. There's no way to describe the moment when you are given such devastating news.
"At no stage did I think they'd say it was breast cancer. It was like I was walking through a field of daisies and someone suddenly hit me with a baseball bat from behind. I didn't see it coming."
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