Next lesson to be heard in keeping the peace throughout homes is to keep your mouth shut sometimes. That sounds a bit harsh to put it out there so bluntly, but truly understand that not everyone around you wants to hear your "opinions". Your thoughts and input are important to those you love. Be careful not to abuse this right though, if your always going off about something or your opinion on a matter...it will get to the point when those around you will not care so much for what you have to say because your always saying ...."something." Are you starting to get the point? Now lets move on to the next phase in keeping the peace.
Keeping the peace in your home can start with the atmosphere. Create an atmosphere that is enjoyable. Atmosphere improvement can be as simple as lighting a few candles to painting the color of your walls a more inviting shade than the blah white that was there when you moved in. Play music that evokes an atmosphere that you want to have in your home.
And finally one last thing that can help you keep the peace is to have boundaries established in your homes. Boundaries create stability, discipline, and an order that almost produces a peace on it's own and then it is up to you to carry it through to every day living.
More on Boundaries.