First off, congratulations! You'll hear this a thousand times, but I can't stress enough for you to enjoy these first few years. Any trials that you think you're going through are nothing compared to the mouth/expenses/attitude you're going to run into when they hit the teens! Anyway, I've got twins and what worked for one doesn't necessarily work for the other. What worked on my little girl was to wrap her (bind her, really) in this straight jacket thing called a swaddle. My little boy would go ballistic if we put him in it, though. Classical music with some Widespread Panic and Led Zeppelin thrown in seemed to work, too. Like the other dads have said, routine is big, so experiment until you find something that works well and try to stick to it, even if they fuss about it. They'll eventually get settled in and you can get back to more Destiny or making more babies, lol.