how'd you get your license in the first place
i got my license and probably went through the same process as you if you got one.
i have the same issue. i can drive well, got my license easily and have driven around with friends with no worries.
but when im alone in the car, (which is supposed to be relaxing), i get super nervous. its odd. im just going to shrug it off as new, though. since im used to always driving with someone (the instructor)