If you have been feeling irritable or out of sorts for a while, then the problem may be hitting closer to home than you realize. The truth is that your home environment weighs heavy on the state of your mood. This is a point that is sometimes easy to overlook, because you often just accept what goes on in your home environment as being normal. However, sometimes changing certain factors within your home environment can lift your mood in a significant way. Here are four areas to consider making changes.