I don't buy into most parenting books, but after we accidentally taught our first to need her hand held for an hour to fall asleep, we realized we needed to do

I don't buy into most parenting books, but after we accidentally taught our first to need her hand held for an hour to fall asleep, we realized we needed to do something different for the second. My wife read a book by Ferber and it changed everything. I met a lot of people who said they tried Ferber and it didn't work, but none who actually read the book and did what it said.