One of the countries most respected television personalities, Sir Paul told TVNZ’s Sunday programme that death was a scary prospect but that he had made peace.
He said the worst part was “going to bed and closing your eyes and not knowing if you’re going to wake up again”.
“I’m a bit frightened, but I plan to increase my peace with God,” he said.
“I’m worried about what’s over the hill. I don’t know what there is.”
Sir Paul has had a recurrence of prostate cancer, and also has heart disease.
He retired in November, and was made a Knight Companion of the New Zealand Order of Merit this month.
The ceremony was brought forward due to his fading health.
In the interview he said he regretted how he had treated his former wife Dr Hinemoa Elder, having had an affair and gone through a very public breakup.
He also paid tribute to his current wife Lady Deborah, his late mother Chrissie, and step daughter Millie, who has undergone a public battle with drug addiction.
In a career spanning more than 30 years, he has covered some of New Zealand’s biggest stories.
He told Sunday his most memorable was Eve van Grafhorst, a girl with Aids.
“I love people,” he said.
“I really worked hard and I did it well, I think. There were some slip-ups and there were some bloody stupid mistakes.
“I upset some bad people – which I don’t mind – but I also upset some good people.”
He admitted goading American sailor Dennis Conner, who famously stormed out of an interview, in the hope of getting a reaction.