The 46-year-old actress - who was previously nominated for an Oscar for her role in `Doubt` in 2008 and lost out to Best Actress for her role in `The Help` this year - says the pressure has a negative effect on her acting because she gets so caught up in promotion for the ceremonies.
Asked how she feels now awardsseason is over, she said: "Relieved! The awards buzz is the most nerve-racking thing and it has nothing to do with being an actor.
"After the Oscar nomination for `Doubt`, I went back to work in shock. You`re too busy doing all the awards promotion and you`re not acting.
"Then I had to go back to work, but I couldn`t remember my lines and I was overacting. It remains the worst work I`ve done."
Viola is getting used to the attention she receives now she is a household name, but admits there are some aspects that have "thrown" her.
She explained to Britain`s HELLO! magazine: "I`m used to it now but I do feel I`ve lost some of my anonymity. This self-promotion thing has thrown me for a loop.
"Recently I chose a dress and thought, `I like this dress, it`s cute and it doesn`t make me feel big.` And someone said, `Yeah but to this event you have to wear something by a major designer.` "