Jewish sources teach that the best prescription for good, healthy kids is a great marriage. Be careful not to speak disrespectfully to your husband, and try to generally present a united front to the kids. If you don't share a secret language with your husband, then make an effort to speak in private when you need to criticize. However, it is healthy for children to see that you can discuss issues respectfully without getting hostile.
These Shalom Bayit Thoughts are geared for the average couple, who has typical issues that are not "off the chart." If you are in a situation involving mental illness or abuse, please seek professional help.