Jenny-May Clarkson has moved from being at the top of global netball to fronting the country's highest-rated breakfast TV show - but she has revealed that her career success has not prevented her from feeling like a fraud at times.

Clarkson joined Niva Retimanu and Beatrice Faumuina on the season final of the NZ Herald podcast, Straight Up, to reflect on her long and varied career.

The interview was recorded prior to Clarkson self-isolating after coming into casual contact with a Covid-19 case.

The youngest of six children, Clarkson grew up in Piopio where her parents ran a takeaway shop. She said she loved to have her family's high expectations on her that pushed her to achieve, and she had a determination from an early age that her father used to comment on.

"I used to walk past the shop on my way to school, and I had a real determination about me. I wouldn't even look in the shop to say hi or anything. Obviously, my focus was on something else I was going to school to do.

"I guess I'll never forget that, as it reminds me that even as a young child there was something within me that drove me to want to achieve," she said.

Clarkson went on to play for the Silver Ferns from 1997 to 2002, winning silver at the Commonwealth Games in 2002, before transitioning into broadcasting and newsreading.

Since 2019, Clarkson has been part of TVNZ's Breakfast show, being promoted to co-host alongside John Campbell in 2020.

Despite her success and her desire to succeed, Clarkson revealed to Straight Up that she still struggles with self-doubt and feeling like a fraud.

"I still have this real narrative about who I am and that I'm not good enough. It happens to me during the show. In three hours, you have peaks and troughs. And one day this week, I had just troughs, there were no peaks, it was just a very low space."