Samantha Womack has been battling anxiety for two years.
While she has been acting since the early 1990s, the former 'EastEnders' star finds it "quite difficult" at times to overcome her nervousness on stage and in front of the camera, although she copes a lot better starring on TV.
She said: "I feel safer behind a camera. I certainly have more anxiety about live theatre because if you don't get it right, you can't go back. I really battle with it a lot more. It started around two years ago - it comes and goes. It's a really strange thing.
"It's not based on any one specific thing, but I think it's more to do with when you get older, you consider everything much more. There's an arrogance of youth. Some days I can cope with it and other days I find it quite difficult. But what I do now is let people know that's the state I'm in rather than pretend I'm not."
The 40-year-old actress - who has son Ben, 12, and seven-year-old daughter Lily-Rose - admits it is "very hard" to juggle motherhood and an acting career, and feels sad that her late father, who committed suicide in 2009, isn't around to see his grandchildren grow up.
She added to new! magazine: "It's very hard to do both things well. Lily wants to be around Mummy a lot, which is great, so she comes to rehearsals. Mark's mum is a teacher so the only sad thing is that he [her dad] didn't get to see those things. He would've loved those stories. But it certainly doesn't make it any easier, because with something like that it doesn't get any easier. It just stays with you."