I know what you mean about heavy traffic. That makes me anxious as well. I just try to focus on dealing with the situation and getting to my destination. I used to really get mad at people because of the way they drove, but now I am for the most part over that. I think the reason I was dealing with the anxiety was because I felt like I was not in control of everything when I was in traffic. However, now, I have learned I just have to relax and do my best to get through the heavy traffic.