Learn to enjoy every minute of your life. Be happy now. Don't wait for something outside of yourself to make you happy in the future. Think how really precious is the time you have to spend whether it's at work or with your family. Every minute should be enjoyed and savored.
Change is certain. Peace is followed by disturbances departure of evil men by their return. Such recurrences should not constitute occasions for sadness but realities for awareness so that one may be happy in the interim.