Jennie Garth Shares the Secret to Keeping Off the Weight

updated 03/06/2013 AT 9:00 AM ET

originally published 03/07/2013 AT 8:05 AM ET

After having three children, Jennie Garth worked hard to get her body into cover-girl shape, losing 30 pounds to sizzle in a bikini.

But, she says, she’s fine with a little Easter chocolate indulgence – or even the occasional cupcake.

Maintenance is definitely challenging. It’s something you have to do daily,” Garth said during a Lindt-sponsored charity auction in New York, benefitting Autism Speaks.

“You have to remind yourself what your priorities are,” she told PEOPLE, “and remind yourself about staying healthy and living a healthy life.”

But Garth, 40 – who starred last year in her own CMT reality series Jennie Garth: Little Bit Country,, and who split from Peter Facinelli in March 2012 after 11 years of marriage – says that doesn’t mean she’s totally depriving herself of a bite or two of her favorite white chocolate (“My weakness,” she said) or baking with her three daughters.

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