“80-90 percent of what you fear will happen will never really come into reality. It may sometimes seem that by worrying we can less the sorrow of tomorrow. But it never works. It only sucks the life out of today and this moment. 

To be able to live better today and to be able to take that action to prevent the possible sorrow it’s important to learn to live in the present moment.”

- http://www.positivityblog.com/index.php/2009/10/23/how-to-overcome-your-worries/