Katherine Heigl is ''grateful'' for her movie career.

The 35-year-old star - who is making her TV comeback in new show 'State of Affairs' later this year - recently admitted she nearly quit acting because she didn't feel ''challenged'' by her string of romantic comedy roles, such as '27 Dresses', but the actress now insists she is thankful for all her roles and watches her films when they are on TV.

Speaking at a Television Critics Association event in Beverly Hills yesterday (13.07.14), she explained: ''I was just kind of making choices that were certainly unbelievably fun - I had a really good time and I still love those movies. I'll still watch them. I know that sounds vain, but every once in a while they'll come on TV and I'm just grateful that I was there, that I got to be a part of it.''

While she is grateful for her success, the former 'Grey's Anatomy' star admits she worried fans were tired of seeing her playing unlucky-in-love leading ladies.

Katherine added: ''But then it starts to wear you down a little bit and it's important that you're making creative choices that support your creativity and challenge you as artist, because otherwise your audience gets bored by you!''

The blonde beauty - who is married to Josh Kelley, with whom she has adopted daughters Naleigh, four, and two-year-old Adalaide - also spoke of her recent break from acting to spend more time with her family.

She said: ''I took a couple of years off to just really be with my family and be with my new daughter and expand my family. I needed that time. I needed to be a mum and be a wife and be a friend and revel in that. And remember what it is that I feel so passionate about in this industry.''