A lot has changed for Jimmy Fallon over the past year, and now he's opening up about his new life as a father to 11-month-old Winnie and his gig hosting The Tonight Show. While Jimmy's new job has been earning him rave reviews (and more than a few viral hits), he told People that the hardest — and most exciting — part of his new life is becoming a father. "When you have a baby, sleep is not an option. You can't sleep. Even on vacation, you wake up at 6:30 a.m.," Jimmy said. "But being a father is the most exciting, amazing thing that ever happened to me. . . . I didn't think it was going to be this fun. But everything just gets heightened when you have a baby. The volume gets turned up on life. I never knew I could be this happy, and that's the truth." Jimmy's fun attitude toward fatherhood probably inspired his cover photo shoot with his daughter, in which the father-daughter duo wears matching suits.