The Who You Are hitmaker, who is currently leading the midweek charts with 'Domino', was speaking after receiving three Brit Awards nominations.
She told PA: "I don't ever feel like I've done enough. I feel like every year, there's more for you to learn and grow and challenge yourself, but I definitely feel like I've made my point.
"Last year, not many people had heard of my music so I felt like I had a point to prove to the fans. Everyone was like, 'Who's this girl?'.
"This year has been amazing and I'm very ready to make some amazing moments in 2012."
Of her Brit nods, the singer added: "Being nominated for the first time is an amazing feeling. I remember being here last year and not knowing what the next 12 months would hold.
"I feel like I can stand here today, and have an understanding of what I want to achieve and what it's going to be like."
> Jessie J promises new music in 2012
Watch the video to Jessie J's 'Domino' below: