I was receiving some recurring training from a well known and extremely accomplished instructor in Scone a few years back and the subject of being a natural pilot came up, he explained to me that as far as he was aware the only natural pilots he knew of were birds and even they crashed from time to time.
I personally think a little fear, doubt and wariness every time you drive into the airfield and especially when you taxi into position for departure is a good thing it keeps you extremely focused on the task at hand to the exclusion of any peripheral nonsense unrelated to flying that may be in your head.
As the saying goes, there are a lot of old pilots, there are also a lot of bold pilots, but there are very few old AND bold pilots.
Good luck with you training.