I completely understand where you're coming from. I have 4 boys, now 6,4, and 2 1/2 yr. old twins. I'm still waiting to sleep through the night and/or not waking at 5:00am for the day. All my boys were poor sleepers. With my first we ended up with a sleep specialist, Dr. Becker, out of Children's (he was great if you ever need him and he comes to Waltham). Anyway from what I've learned if you go the "cry it out" route (whichever variation of it you choose) 6 months is the age to do it. In my experience I have learned to do whatever I needed to do until 6 months. Believe it or not but at 4 months,one of my boys spent a week in his swing at night. Many friends/ co-workers etc.. would offer me all kinds of "nice and happy" books. None of this worked for me. I read a lot from the Ferber book, and then modified it to fit what I felt comfortable with. Basically what I've learned is that the least amount of intervention to get them to sleep is best, for some lucky parents that means a pat on the back for others like me that ment picking them up, re-swaddling and rocking (until 6 mo.) I wish I could offer more help. After 4 boys I've learned to do whatever you have to to survive. Good luck, try not to be too discouraged if the "nice and happy" stuff everyone talks about doesn't work, it never did for me but somehow I survived and actually had more kids after that.