One thing I do along those lines when I'm in a scary driving situation is pretend I'm at an amusement park on a roller coaster That gets me to relax a little, knowing that I will get through it and the being scared was just part of the experience but not the "main" part (the actual being safe when driving that route/problem). It puts it back in perspective so I can see it is "just" pot holes or construction, bridges or tunnels or other "normal" driving issues this time.