I think fear is a universal survival mechanism, but only adult humans can grasp the implications of choices, and the possible unintended consequences.
I always considered myself a closet wus, but I overcame the fear and spent enough hours to learn to fly and land a small plane a couple of dozen times. Then I walked away (got married, actually.)
That first solo landing was unplanned (by me) unexpected and literally unforgettable.
Good for you for overcoming your fear!