As a missionary wife, on the field, we are tempted and sometimes pressured to participate in every ministry possible. Working in the church has many, many opportunities for service. Children's Sunday School and clubs, ladies meetings and Bible studies, choir, etc. Each is wonderful and good, but let us not overlook our own personal ministry.
Deuteronomy 6:7 "And thou shalt teach them diligently unto thy children, and shalt talk of them when thou sittest in thine house, and when thou walkest by the way, and when thou list down, and when thou risest up."
Don't be so busy and tired with helping others that you do not sit, laugh, joke, and play with your children. The most important lessons of their life can be learned and should be learned at your knee.