Ronan Keating has revealed he's still angry about his mother's death from cancer 14 years ago.
In an exclusive blog for The Huffington Post UK, the Boyzone singer says his mother came from a generation who were brought up "not to make a fuss, not to visit the doctor unless it was really serious and not to discuss 'women's troubles'".
He remembers: "When she finally made an appointment to see a specialist about the lump in her breast, it was too late."
Keating writes: "The anger we all felt ate at me in particular. I threw myself into work with Boyzone and used the madness of our lives to mask the hurt that I was feeling. I found it impossible to comprehend that my Mother had been taken from us."
He explains "the realisation that cancer can be treated if it is diagnosed early enough" drove him and his family to set up the Marie Keating Foundation (MKF).
Formed in 1998 in Ireland, with the aim of raising funds to pay for a mobile cancer awareness unit, and since partnering with Cancer Research UK, it has raised over £3.75 million.
Since his mother's death, Keating has had to cope with two more personal losses, the sudden death of his bandmate and friend Stephen Gately in 2009, and divorce from his wife of 14 years, Yvonne.
The couple are said to have "tried everything" to make the relationship work following rumours of the Boyzone star's affair with a dancer back in 2010.
Keating is now once again throwing himself into his music, with his first studio album in six years and the announcement of a brand new tour.
Having previously sold 25 million albums, Keating says, "The album is back to proper pop again."
Keating's writing team on the album includes Greg Alexander and Rick Nowells, who penned some of the star's biggest hits, Life is a Rollercoaster and Lovin' Each Day.
Miley Cyrus & Liam Hemsworth
Miranda Kerr and Orlando Bloom
<a href="http://www.huffingtonpost.com/2013/10/25/orlando-bloom-miranda-kerr-split_n_4162443.html?utm_hp_ref=celebrity-splits" target="_blank">Miranda Kerr and Orlando Bloom split</a> in October after three years of marriage. The two released a statement saying they "love, support and respect each other as both parents of their son and as family."
Ashley Judd and Dario Franchitti
After 12 years together, <a href="http://www.huffingtonpost.com/2013/01/30/ashley-judd-dario-franchitti-divorce_n_2580690.html" target="_blank">Ashley Judd and Dario Franchitti announced their divorce</a> in January.
Diane Lane and Josh Brolin
Diane Lane and Josh Brolin split in February. Their <a href="http://www.huffingtonpost.com/2013/12/02/josh-brolin-diane-lane-divorced_n_4373282.html" target="_blank">divorce was finalized</a> in December.
Catherine Zeta Jones and Michael Douglas
Catherine Zeta Jones and Michael Douglas <a href="http://www.huffingtonpost.com/2013/08/28/catherine-zeta-jones-michael-douglas-separate_n_3828657.html" target="_blank">separated in August</a>. Sources said they are "taking a break."
Clint Eastwood and Dina
<a href="http://www.huffingtonpost.com/2013/08/29/clint-eastwood-dina-eastwood-separate_n_3838790.html?utm_hp_ref=celebrity-splits" target="_blank">Clint Eastwood and his wife Dina split</a> in August. They had been together 17 years.
Malin Akerman and Roberto Zincone
Actress Malin Akerman and her rocker husband, Roberto Zincone, <a href="http://www.huffingtonpost.com/2013/11/25/malin-akerman-roberto-zincone-split_n_4340480.html" target="_blank">split in November</a> just months after the birth of their first child.
Michael Sheen, Rachel McAdams
Michael Sheen and Rachel McAdams <a href="http://www.huffingtonpost.com/2013/02/27/rachel-mcadams-michael-sheen-break-up_n_2772707.html?utm_hp_ref=celebrity-splits" target="_blank">broke up in February</a>. They met on the set of "Midnight in Paris" and dated for two years.
Bruce and Kris Jenner
Bruce and Kris Jenner <a href="http://www.huffingtonpost.com/2013/10/09/kris-jenner-bruce-jenner-separate-what-went-wrong_n_4070145.html?utm_hp_ref=celebrity-splits" target="_blank">announced the end of their marriage</a> in October. They had been together for 22 years.
George Clooney & Stacy Keibler
Kristen Stewart & Robert Pattinson
Nina Dubrov & Ian Somerhalder
Julianne Hough & Ryan Seacrest
Britney Spears & Jason Trawick
Bradley Cooper & Zoe Saldana
Kat Von D and Deadmau5
Tattoo artist Kat Von D and producer Deadmau5 <a href="http://www.huffingtonpost.ca/2013/06/27/deadmau5-kat-von-d-split-cheating_n_3509721.html" target="_blank">ended their engagement</a> in June. She announced the split via Twitter, insinuating he cheated on her.
Bethenny Frankel & Jason Hoppy
(Photo by G. Gershoff/Getty Images for Tanger Outlets)
Justin Bieber and Selena Gomez
Justin Bieber and Selena Gomez <a href="http://www.huffingtonpost.com/2013/01/04/justin-bieber-selena-gomez-split-break-up-again-new-years_n_2408778.html" target="_blank">split for the second time</a> just after New Year's. Teenyboppers everywhere sobbed.
Danny Devito & Rhea Perlman
(AP Foto/Peter Kramer, Archivo)
Amy Poehle & Will Arnett
(AP Photo/Matt Sayles)
Danielle Spencer & Russell Crowe
(Photo by Lisa Maree Williams/Getty Images)
Hayden Panettiere & Scotty McKnight
(Photo by Jason Merritt/Getty Images)
Katie Holmes & Tom Cruise
Adam Levine and Anne Vyalitsyna
(AP Photo/Chris Pizzello)
Brenda Song & Trace Cyrus
(Photo by Michael Buckner/Getty Images for T-Mobile)
Debra Messing & Daniel Zelman
(AP Photo/Gus Ruelas, File)
Zooey Deschanel & Ben Gibbard
(Photo by Kevin Winter/Getty Images)
Martin & Shamicka Lawrence
Avril Lavigne & Brody Jenner
(Photo by Ilya S. Savenok/Getty Images)
Johnny Depp & Vanessa Paradis
Jennie Garth & Peter Facinelli
Eva Longoria & Eduardo Cruz
David Arquette & Christina McLarty
"Bachelorette" Ali Fedotowsky & Roberto Martinez
Seal & Heidi Klum
Katy Perry & Russell Brand
Emma Roberts & Chord Overstreet
Ashton Kutcher & Demi Moore
Cameron Diaz & Alex Rodriguez
Jesse James & Kat Von D
Jennifer Lopez & Marc Anthony
Kate Bosworth & Alexander Skarsgard
James Franco & Ahna O'Reilly
Hugh Hefner & Crystal Harris
Renee Zellweger & Bradley Cooper
David Arquette & Courtney Cox
(AP Photo/InStyle, Casey Rodgers)
George Clooney & Elisabetta Canalis
Lauren Conrad & Kyle Howard
Jason Mraz & Tristan Prettyman
Kim Kardashian & Kris Humphries
Christina Aguilera & Jordan Bratman
Also on HuffPost: