I don't know why, but for the last several months I was having massive anxiety in preparation of upcoming interviews. I'm a veteran engineers (almost 20 years in the industry), and had lost my job this year that was out of my control, and the idea of being asked coding questions drove me crazy. I wish your years of experience, work references, and the fact that you have a college degree actually meant something.
Although I've learned to accept it. I even had to learn relaxation techniques to remain calm. I'll even admit this anxiety has caused me some physical health issue.
Its strange because I've always been a highly productive and outstanding engineering in any role that I've taken (large company or startup).
In any case, I'm curious to hear if you've had this problem. How did you deal with it? How do you see these interviews?