My mom read an article about negative thinking and complaining and how it can become addictive. There is a thread about learned helplessness. I think these things are true but don't apply as much to those of us with depression. When it is severe we just can't help it. When mild to moderate and in general the attitude of gratitude and staying in the moment and looking on the bright side can be powerful. Sometimes we have to look at the smallest things to be grateful for.