“So I just turned 40, and I’ve been feeling really good and not freaking out about [it],” says Alison Brie. “For me, I feel just as youthful as…I mean, I feel much better than I felt in my 20s, honestly, because I was eating like shit and really not taking care of my skin. I really used my 30s to hone all of that stuff, and now honestly I’ve never felt better.” Mornings are especially important for Brie, who rose to fame on Mad Men and stars in the new romantic comedy Somebody I Used to Know alongside her husband, Dave Franco. Her a.m. routine begins with a daily morning…