Finally, communicate, communicate, communicate. Made a point to talk with teens when there's not a problem. Conversations with teens can be refreshing and insightful, and they should be a part of each day. Most take place in the presence of other people, so find occasions to talk with your teen alone, away from brother, sister and anyone else. And make sure you listen carefully to what is being said as well as what is not.
Effective communication is, after all, the key to healthy relationships.