12/19/2013 at 07:00 PM EST
has canceled her Australian tour next year, saying that she needs to focus on herself.
"My fans are so important to me and I would never want to disappoint them," the singer says in a statement. "But it has become clear to me and those close to me that after many years of putting my work first, I need to spend some time on myself in order to be the best person I can be."
A rep for Gomez, 21, confirmed the news to PEOPLE.
A source close to the singer says there's nothing to be worried about: "Selena is fine, she's in a great space," the source says. "She's looking forward to spending the holidays with her family."
Gomez has recently played 55 dates across the U.S. and in Europe with her Stars Dance tour, which ended on Nov. 26.
"She's been on the road for six months and she's just ready to be normal and at home with her family," the source says. "She's been working nonstop since she was 15 and wants to take a minute to herself."
Reporting by MELODY CHIU