Most of my life up to 30 was fear driven. Not unreasonable phobias, but justified fear of extreme consequences if you did or didn't do X/Y/Z. However, about a third of the way through that process, those very real fears finally exceeded what I could bear and I was left with only two options: Give up and just let it happen, or fight 'to expedite' the process...not stop it, which was not an option. I chose the latter because I had become so tired of being afraid, I began fearing fear.
IOW, I learned to be more afraid of being fearful, when faced with such I'd push it as hard as I could, consequences be damned. Fools luck most likely, but obviously I got past those troubles. However, with that mindset deeply ingrained, I then found myself charging headlong into troubles I could have walked away from...and eventually, I even amazingly made it past that point till my world/life changed at 30.
Great, so it's all over and happily ever after. Well, not really. That same fear of being afraid still dominates my decision making, no matter how much I try and squash it, now reflex. So, anything that even slightly resembles those long gone reasons for concern finds me reacting in unconventional and sometimes extreme 'fearless' fashion, although, I'm not really fearless. I just fear being afraid.
Sometimes it pays off; like in an extreme crisis, I calm to an almost sedate point and address the problem without a hitch. Others, not so much where my response is well over the top for the situation (though fortunately not negative since I've designed my surroundings to suit my 'issues').