Joe Simpson is working on his health.
The 58-year-old father of Jessica and Ashlee Simpson is recovering from surgery after being diagnosed with prostate cancer two months ago, his rep confirms to ET. Simpson's prostate surgery went well and he's now back to work as a photographer.
"This is a blessing in disguise for Joe," a source close to Simpson tells ET. "It has opened his eyes to eating healthier and exercising. This diagnosis has brought Joe and his family together and reminded him that what matters most is family."
The source also says that Simpson's daughters were "devastated at the initial diagnosis," but have since rallied behind their dad. "They are being positive, uplifting forces for him and are helping him get through this. With Joe's faith in God and his family's support, he knows he will come out of this strong."
Even amid his recovery, Simpson has kept busy with his work. He recently shot a campaign for Clinique, photographed Brandi Glanville and Eva Sambora, and will head to Japan to shoot the cover for Nation-Alist magazine next week.
Last year, Simpson sat down with ET to talk about his surprising career move.
"I love fashion," he said. "I love being able to shoot beautiful people ... It's just kinda like going back and finding a love that I used to have... it's brilliant."
In addition to his growing photography business, Simpson had also launched his own fashion label, Control Sector.
"I love the opportunity to create and do new things," he explained. "You know, the photography thing is fun. The fashion thing is fun. I still do TV and I still do music, so you know, I'm crazy all the time ... I have plenty to do. I'm not bored!"