I think that saying no to kids is one of the most important things you can do to help them. Too many of the kids my kids grew up with never heard the word no during their childhood because their parents wanted to give them everything they did have while growing up. They ended up being spoiled brats and got even worse once the school system in the USA got a hold of them and told them what unique individuals they were. Disappointment is a part of life and how to handle it is something that should be learned early in life.