Too often we get caught thinking about what we wish we had or we wish were different.  In doing so, we forget to be grateful for what we already have, and for those trials we have been spared.  Each time you have a critical or negative thought, counter it with a positive one.  For example,if you do not get along with your in-laws and are dreading Thanksgiving dinner, just be grateful that it is only once a year 🙂  Find the bright side.  Look for the silver lining.  Develop an attitude of gratitude.  Whatever you want to call it, you will probably find a certain amount of peace if you can try to look for the positive.