The 55-year-old is best known for helming Countryfile alongside Matt Baker for many years, up until 2014.
Julia was diagnosed with breast cancer in 2021 after a year and a half of tests.
She had a 6cm tumour removed from her left breast, and after getting through that, she says it has inspired her to "be grateful for every day".
Speaking to Bella Magazine, Julia shared: "Being confronted with a very serious health problem like cancer made me realise we're not infallible.
"It can happen to any of us, and it's important to take the best possible care of yourself and to be grateful for every day. It's been a real shift."
Julia is now in remission, but has explained she's changed quite a few things in her life.
The presenter, who has three children with property developer husband Gerard Cunningham, explained that she has altered her beauty regime.
She said: "I've always been a sucker for beauty products, but after my diagnosis I became much more conscious about what I put on my skin and the potential impact of chemicals we often don't think twice about.
"Now, my make-up, skincare and sun lotions are clean. I love Green People, because it's organic, marine-friendly and the brand also donates to the Marine Conservation Society."
Additionally, she makes an effort to do breathwork as a way to reduce some of the stress in her life.
Julia shared: "Part of my problem in my old life was managing stress, so I've been using lots of tools to even it out.
"Stress and emotional health are things that we should all take very seriously. People don't think that they have a physical impact, but they do.
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"I also do five minutes of breathwork every afternoon to slow down my heart rate, and then, in the evening, I'll lie with my legs up against the wall and do a 10-minute meditation before bed. It really calms the nervous system."
She added: "My routine's had a profound impact on me, and my cortisol levels aren't as steep as they used to be.
"I've learnt not to hold on to stress and anger in a way that I would've in the past. I'm still very driven, but I'm more at peace with myself."