Kate Winslet feels she still has "a lot to prove" as a performer.
The British star has won a host of awards including an Oscar for best actress for her role in The Reader but she believes she still has a long way to go.
The 36-year-old shared her thoughts on her acting abilities at tonight's London premiere of Titanic 3D, a re-release of the movie that shot her to fame.
"I still have a lot to prove and a lot of experiences to have and skills to learn," she told Cover Media.
Kate adds working on the hit film was one of the biggest learning curves of her working life. She admits shooting for the disaster movie was not easy.
"I mean it's no secret it was an extremely tough shoot," she said.
"It involved long hours and freezing cold water. It was very, very difficult for everybody but not without good reason and no one told us that it wasn't going to be. Making films is really hard and it was an epic disaster movie, you know, of course it was going to be difficult."
While the original movie was released about 15 years ago, Kate says it still feels like she was on set yesterday. She can still recall her first day of shooting - a scene involving an argument between her character Rose Bukater and Cal Hockley, played by Billy Zane.
"The first scene I shot was the scene between Rose and Cal as they are having breakfast and he's furious that she has been dancing the night before and flings the breakfast table over," she said.
"People keep saying to me so how does it feel to cast your mind back. I didn't cast my mind back, it feels like just yesterday. I remember everything."
Leonardo DiCaprio who plays Jack Dawson, the love interest of Rose was not present for tonight's premiere as he is working on film projects including The Wolf of Wall Street and Django Unchained.
Kate says she formed a close friendship with her co-star and they keep in regular contact.
Titanic, directed by James Cameron, is based on the passenger liner that sank in the North Atlantic Ocean in 1912 after hitting an iceberg on a voyage from Southampton to New York. The new 3D version is set to be released worldwide from April.