I have done a few exercises like the loving kindness exercise. Becoming in touch with yourself and the people you come in contact with really helps you find the positive and be able to look past the negative.
It used to be alot easier to perform exercises like this, before I had a child. My house is never quite and there is always some sort of activity going on. I think if I had more time to focus and be in a totally quite place I would have had better results.

mental exercise is great for many reason. It has be proven that mental exercise reduces the chances of Alzheimer's. Also by keeping you brain activity and your thought process reacting quickly you are better able to deal with stress.