Oh, come on; my brother failed his driver's test a couple times before passing and my stepson's father, my husband, had to suspend his son's learning to drive for awhile because he literally couldn't "get it" and now my stepson teaches driving!

It's practice, practice, practice; it's the mood the test giver is in and your mood/anxiety level, it's all sorts of things wholly unrelated to you (did you use the same kind of car you learned in?) but it's not anything at all about competence as a human being! Keep taking the test until you pass. But quit thinking about those old tapes playing your mother's life story (what you mother said/did is about your mother, not you!) and think about what you want instead.