If it's something that I'm terrified of it's also pretty much something I don't want to do (well, at least not if there's not some reason I HAVE to) (lol lol)
There have times in my life when I've been terrified but had to do something. I've always found at those times that adrenaline kicks in, and I don't even notice being terrified (for the most part). But those times are, to me, those times when there's something really serious at stake and when not doing the thing is not an option.
As far as "just doing something for the sake of overcoming being afraid goes"... No. I don't see the point. I have nothing to prove. "Mildly nervous" or even "very nervous" are on thing. "A little afraid" is one thing. "Terrified" is another.
Maybe it's because I've had a number of circumstances/events in my life that have been terrifying Maybe it's because I think that when something comes naturally and comfortably to us we tend not to be too terrified to do it; so I just don't see the point of doing what pretty much goes against our grain. For whatever reason I don't see the point of doing something I'm terrified to do. Life is short. I have nothing to prove and lots of things in life that are incredibly rewarding in one way or another. So I never get to know what it feels like to jump out of an airplane... Who cares. :/ :/ There'll always be any number of things that one person or another doesn't ever do.
I don't know... My top priorities in life are about people and things that are so much more meaningful than, say, whether I jump out of an airplane or ride in a hot-air balloon. I'll never get to play in Major League baseball or perform in Swan Lake either (lol). They say, "to thine own self be true". My "own self" tells me that I'd rather not increase my chances of being either paralyzed or dead over something as unimportant as finding out what it's like to jump out of an airplane. Besides, my "own self" tells me I wouldn't like it very much anyway. (lol)