Worrying won't stop the bad stuff from happening. It just stops you from enjoying the good.
It's been said that when you worry, you are just looking into the future and not living in the present moment. The peace of today and the moments now are being taken away because you're so focused on controlling the future. The thing is, that we really can't control a lot of what happens to us. And worrying like crazy won't prevent anything bad from happening anyway. It just ruins the good moments you can have. Worrying also causes a lot of stress and is bad for your overall health.
Worrying affects us all to a certain extent. Some of us deal better with worry than others. But we can all learn how to deal with worrying more effectively. One of the tools I have always used and want to share is journaling. Just keep a notebook or journal with you or at your bedside and whenever something is bothering you, or filling your mind, just write it in your journal. It's amazing how just getting something out of your head and onto paper helps to free your mind.