I have twin 6.5 year old girls. My husband and I have different parenting styles. I expect my girls to listen to me the first time I ask something - he is more tolerant of asking repeatedly. I get more frustrated when they don't listen and will discipline more quickly. I believe they are getting mixed messages from us and they are not really behaving they way either of us wants. How do we get them to listen to us the first time we ask them to do something so we don't repeat ourselves or end up yelling?