Sometimes I find it helpful to say the serenity prayer. I like to recite it while I'm about to go to sleep. I've know it for a long time, but only recently have I "rediscovered" it and it's power. It seems so relevant for people with anxiety.

"Lord, grant me the serenity to accept the things I cannot change,
the courage to change the things I can,
and the wisdom to know the difference."

I have know it for years and years to and recite it often. I still have a problem with stress and anxiety. I figure I would be worse if I didn't know this prayer. Why is this stress and anxiety thing so powerful. If we all could accept this prayer for what it says, there would not be a problem. I certainly believe it. It's just that the human part of me takes over.