As Queen Latifah gears up to host tonight’s People’s Choice Awards, the singer-actress is also getting her diet back in gear after some serious holiday play, she tells People magazine.

“I’m glad I re-signed [with Jenny Craig] because I had a little fun over the holidays, as most people do,” says Latifah, 38, who announced this month that she would continue as the spokesperson for the weight-loss program.

“I went to Trinidad and I indulged in everything,” she says, admitting to falling off the wagon temporarily while on vacation. “It wasn’t that I wasn’t eating healthy stuff. It was just a lot of it. There’s always a beach barbeque.”

But she is putting the chicken stews and the rum punch away to get back to “a size healthy.” Working out regularly and swimming, she’s confident: “I will knock this weight back down. I know it,” she says

In 2008, talk show goddess Oprah Winfrey went public about her 40-pound weight gain, saying she was embarrassed and angry at herself about it.

Now? She says she’s done with the excuses. 

The media mogul tells MSCNC.com that she’s just going to make time in her crazy schedule for exercise.

“This is the year of hopefulness. My goal is to be the weight that my body can hold and be healthy and strong and fit and be itself,” she says.