I can tell you I probably couldn't handle it if not for the job I had prior to this. Just not in my temperament. That being said, my first few runs were pretty bad but I stuck with it. Once I got used to it I learned to just take it one thing at a time and try not to let things get to me.
On tougher days it's still a little rough but by the time the day's two thirds over I realize it's not so bad. If I were you, I'd wait until the thirty days are up and try sticking with it. If it truly doesn't seem to get any better stress-wise you probably are better of quitting the driving. No job is worth that kind of misery. I've been there and I know. But if it does work out, then you'll be glad you did stay a little longer.