This is a quote I love from the book Parenting is Heart Work by Dr. Scott Turansky and Joanne Miller. It really says it all.
Parents need to develop strong wills. It's not an option. Many strong-willed kids have weak-willed parents, allowing the children to become more selfish and demanding. Unmotivated children also need strong-willed parents to challenge them to succeed.
You can find the book at most online stores.