Child star Melissa Joan Hart has continued to grace screens across the country since her "Clarissa Explains it All" days, most recently starring on the family sitcom "Melissa and Joey." The mom-of-three told FOX411 how she maintains her impressive 40-pound weight loss while balancing her growing career and family. The 39-year-old also shared how she stays true to her faith in Hollywood.

FOX411: You've never been shy about your Christian faith and family values.
Melissa Joan Hart: You know, it can be a little scary sometimes to say anything. These days, it's a talent to be politically correct. I find that as long as I don't care what other people think and I stand by my values, it doesn't matter what other people say. People are going to argue with me no matter if I say something controversial or not. I'm going to ignore them because I have every right to say what I want to say and put out there what I feel. I don't judge others and I'm definitely not trying to hurt anyone's feelings. As far as my faith, I think it is important to share that those are my values and I'm going to use them to guide me through life and I'm not going to steer away from it, it's part of who I am.

FOX411: You turn 40 this year, how are you celebrating?
Hart: I should have lied when I was 12 on "Clarissa," said I was five years younger. I do have some plans but things always change last minute [with my job]. I am going to do a sexy photoshoot.

FOX411: Between your clothing line, acting career and raising three boys, how do you balance everything?
Hart: Well, now that "Melissa and Joey" is over, I have more time to focus on my kids. They're in school in the morning so that's when I get to do other stuff like [my clothing line] King of Harts, that's been a passion project of mine to put cool clothes on kids.

FOX411: You lost 40 lbs on Nutrisystem. How do you maintain your weight loss especially during all of the holidays?
Hart: I've had a lot of support from my friends at Nutrisystem. I especially love the shakes and even being able to enjoy some desserts on the program. When you have the holidays coming up and you indulge a little it's always important to get back on the program. You can have one to two days and then get back on it. I also spin and work out with my husband. You'll see us training together on my Instagram.

FOX411: What were your New Year's resolutions?
Hart: I have a blog on my website about it. I usually try to give up electronics, but I didn't set good rules for myself. I tried in theory to do it but because I didn't make good rules it didn't stick. This year, it's more about just trying not to yell as much in my household.