I started reading Tracy's books while pregnant, so started EASY as soon as we brought our son home from the hospital. Of course, I didn't start off quite right because my pregnancy addled brain didn't remember everything correctly as I didn't have a baby to practice on! So, we had to adjust a few things during the 2nd week of life. But we got things going pretty well by then and he's been going gang-busters ever since, and was sleeping thru the night by 12 weeks. I really liked EASY because it really matches how I was raised, and is very common sense. However, rather than just being some common sense advice given by my mom it is a formula I can follow which makes it easier! My son is such a happy happy boy, and I think so much of it is because he is well rested, well fed, and gets lots of playtime in every day. We don't spend our days running around like chickens with our heads cut off. We have this nice routine that he can count on. Sometimes we have to run errands or do things that don't follow the routine, but that's OK. Most of the time he knows what to expect, and I think that makes his life so much more understandable to him. I love how our life is! It's enabled me to work from home which makes my family life better too!