Worry is just about the worst form of mental activity there is--next to hate, which is deeply destructive.
Worry is pointless. It is wasted mental energy.
It also creates bio-chemical reactions which harm the body, producing everything from indigestion to coronary arrest, and a multitude of things in between.
Health will improve almost at once when worrying ends.
-From "Conversations with God" by Neale Donald Walsch
Don't worry, be happy!