Kristen Stewart is a ''rebel''.

The 'Twilight Saga' actress is happy to follow her heart and work on movies that interest her, rather than take advice and accept roles in big Hollywood productions and wants to ''revolutionise'' the things she doesn't like.

Asked if she is a rebel, she said: ''I think it all started when I stopped listening to others and I decided to take a break from the big Hollywood productions to focus on films for which I earn less but that I believe will repay me later on instead. If not financially, at least personally.

''However, it is true; I'm a rebel. I mean, I prefer doing things my way and revolutionise what I don't like instead.''

The 25-year-old actress thinks the key to happiness is figuring out what ''you really want'' as early in life as possible.

She said: ''I believe it's important to figure out as soon as possible what you really want. Someone still doesn't know at 50 years old. I think it's essential if you want to reach the true happiness. ''

She told Italy's Gioia magazine: ''I believe that learning is an ongoing process; you never really stop to discover who you really are. Life changes you constantly. I do a job that allows me to discover other souls and that makes me go deeply into the mind and thoughts of other women and it's a process that helps me to grow.''