Yep - worry is something I struggle with from time to time. Unfortunately, anxiety runs in the family...
One thing God is doing in this area is teaching me how to trust! I still have my ups and downs (right now I'm kinda in a down), but mostly I'm learning that he has a plan for me and nothing will get in the way - not even my anxiety. I have to try to keep putting myself into situations that confront the fear, though. It's hard, and I've been losing my courage lately...