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In Sarah Jessica Parker‘s new film I Don’t Know How She Does It, the actress plays Kate Reddy, a hedge fund manager trying her best to balance her family and her career. So when we caught up with Parker at the movie’s premiere, we had to get the inside scoop on how she does it all. “I approach every day as a fresh start with enormous possibilities and I muddle through,” she told InStyle.com exclusively. “I fall short every day, but you still have to get up and start the day with some promise and a little optimism.” Good advice!

Click through the gallery for more life balance tips from the actress. Plus, see her on-set style, as well as looks from co-stars Christina Hendricks and Olivia Munn!

— Caitlin Petreycik, reporting by Grace Lee

Celine Dion’s latest fragrance—Signature by Celine Dion—just hit stores this week! “This scent is all about the relationship that I’ve been having with my fans for over 30 years,” the singer told InStyle.com exclusively. The result is a rich combination of floral notes, pink lady apples, and guava, mixed with Indian jasmine, musk, amberwood, and sandalwood. “It’s light, so it’s for any kind of girl at any age. This perfume isn’t a powerful statement; the power I leave to the person. We’ve got the power!” As for how to wear the fragrance, Dion has a smart suggestion: “Perfume is not the leader of your life, it accompanies you. It helps you accomplish what you’re going to do.” In other words, one spritz will do. Shop Signature by Celine Dion for $33.50 (1.7 oz.) at Kohl’s, Target, Sears, Walmart, and most major drugstores now.

Plus, check out the A-Z guide to celebrity fragrances in the gallery!

MORE: Celine’s Las Vegas Show Costumes!