If you rock your son to sleep in your arms when he naps and goes to bed at night, imagine his surprise when he wakes up and Mommy's not there. What you need to do is put your son down when he's awake (and a little groggy) rather than snuggling with him until he conks out. We know, we know -- easier said than done. Your baby may put up a fight initially, and you may be in for a week of some serious crying before he can fall asleep on his own. But if you're consistent, it will happen. Put him down, give him something interesting to look at (like a mobile, a crib-safe mirror, or a toy aquarium) and see how it goes. When your baby cries, let him have at it for 10 minutes before you run in there. After that, you can go in, rub your baby's back and talk in a soothing voice, but don't pick him up. It's tough -- but he'll catch on eventually.