Take, for example, if your baby is playing with a dangerous piece of equipment, you immediately reach out to take it from her. The expected reaction is that your baby cries. The cries will continue until she eventually stops. As a parent, you know the harm that could have been done, but you don't yield and let your child come to harm despite the cries. Or would you? Of course, you won't because you are instilling in your child very important life lessons that will be useful in future. This same principle applies to getting a child to sleep independently