The 38-year-old television presenter, who hosts the Logie-winning comedy show alongside Alan Brough and Adam Hills, said that she has not managed to line up work after the two-month farewell tour ends early next year.
Warhurst told the Herald Sun: "Normally on TV, you get sacked way before this; we had the choice, and it's really nice to own that. It was a good decision.
"But then I just think about what a great season it's been and go, 'What have we done?' Actually, this could be the worst decision I've ever made. I don't necessarily have a job next year."
Warhurst added that she "can't wait" for the Spicks and Specks live gigs in cities such as Melbourne, Sydney and Perth, saying: "The last tour was so much fun. The audience gets involved, and we have a live band that my brother Kit plays in. I love going on the road with those guys."
She also revealed that she is currently writing a six-part documentary that she hopes will be commissioned by The ABC. "It's celebrating stuff that needs celebrating," she said. "Arts and pop culture."
Watch Myf Warhurst take a dare in Spicks and Specks below: