updated 03/06/2013 AT 9:00 AM ET
•originally published 03/07/2013 AT 8:05 AM ET
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.