Abraham Lincoln said when I do good, I feel good. see if you can find a way to see the good in everything. this will take some conscious effort. so even if you complain about something, try to find something positive in it. complain about the neighbors, counter that with something positive about them. complain about the job, think of something positive, negative thought about the marriage, think of something positive. really work on seeing the positive in everything around you. it takes practice but it will get easier and you will see that you will start to feel better. take care.