The Radio 1 breakfast DJ had kept schtum about the shock death of Peaches in early April, but has now revealed the event had made him reassess his own life.
'It made me re-evaluate my life and what I am doing with it. It makes me stop and think'
'I have had a healthier lifestyle for quite a while now. I eat better food and drink less and I am trying to be fitter - and part of that is because I need to get up early and function.'
But the 29-year-old also adds that it's his job to go to parties - so that he has something to talk about the next day.
Nick and Peaches were close friends for years before the star's tragic death at just 25, and were pictured partying together in February.
When Peaches' body was discovered at her Kent home after a suspected heroin overdose, presenter Nick cancelled a trip to Coachella and flew back to England. He then attended the funeral for the star, held at the same church as where she got married just a year before.