TV3 presenter Elaine Crowley has told of her battle with a form of depression.
The 35-year-old, who hosts the 'Midday' show, suffers from dysphoria – a "state of unease or general dissatisfaction with life".
Ms Crowley, who suffered in silence for six months, said she even hid how she was feeling from her colleagues.
"I'm great at putting on a front so nobody in TV3 suspected a thing and I was in great form on air," she said.
"I never felt suicidal, but I did feel that if a bus ran me over it wouldn't make any difference," she said.
"I stopped socialising, I stopped going out and I was avoiding my friends and family. I was coming home from work, getting into bed and staying there until the next morning."
Speaking to 'Irish Country Magazine', she said the support she received from family and friends has helped her to cope.
Meanwhile, best-selling author Marian Keyes said Twitter, on which she has 40,000 followers, has helped her to battle depression.
"Twitter brought me out of the darkness, because I could engage with people without having to leave the house," she said.
"With Twitter you can have a laugh, you can have the craic, you can have great conversations."
She was speaking in an interview with Newstalk radio's Tom Dunne, due to air tomorrow at 10am.