God calls His children to obey. Just as we expect our own children to obey us. While we usually have our children's best interests at heart, we can sometimes have selfish motives for wanting our children to do as we say. Being obedient to the Lord is different in that we can always trust that He will do what is best in our lives, for He knows and holds our future.
What do you want to be when you grow up? I wanted to be a mom.