Heh, this realization does change your life... very, very slowly. Catching up on all those hours invested is hard. Making them pass pleasantly is also a challenge. Spending all day and half the night doing something is easy when it's a source of pride and your refuge from all the stuff you aren't good at.
I spent years aspiring to be good at music. I took piano lessons for years as a kid, even after my parents told me I could stop. I played saxophone in junior high orchestra band and junior high jazz band. I wised up in high school, but then in college I wasted a few hundred bucks on a guitar. I sold it after a month, but then later I started going to the music building several times a week to play the Hanon piano exercises. I actually kept it up for several months before I stopped. No real music, just Hanon.
Music was a waste of time for me because I absolutely hated it. There was the generic pleasure of improving at a skill, but that was the sum total of the pleasure I derived from it. My entire goal in learning music, from the time I was a child until I wasted that fifty or so hours in college, was to play music that I liked hearing and that other people would like hearing. Of course, I was so far from that.... I remember as a child being conscious that my older sister's playing bugged the crap out of me. The mistakes, the awkward tempos. And she was much better than me, five years ahead and also better for her age than I was. The entire payoff for playing music was always years away, even assuming I suddenly became extremely dedicated. Every hour between me and my goal would be me enduring the misery of producing noises that I disliked and was ashamed of. I thought that was just the way it was. I flagellated myself for not being disciplined and far-sighted enough to pursue that distant dream like so many other people did. I knew some kids just enjoyed making bad music, but I didn't think they were the ones who would be good at music someday. I just thought they had horrible taste. The ones who were actually good had clearly been tougher than me; they had fought through all the shame and humiliation of playing badly. They were fierce and ruthless with themselves, and finally, after thousands of hours of hardship, they were able to enjoy the fruits of their labor.
Nowadays I know that's not how it works. I'm more realistic with myself. I could be a great dancer before I'm forty, except that I don't really like dancing. I could be decent at drawing, except that I don't really like to draw. Every couple of weeks I get a great idea for a cartoon and wish I could draw it, but I really don't want to sketch crummy cartoons every day so I'll be ready when I get a good idea. Programming, though.... Fire up gdb and look at a core dump? Why the heck not? Install a new library and play around with it? Fun! Read through some code, figure out how it works, and be on the lookout for a memory leak? Ooh, kind of exciting, I might be the one who finds it.
Those aren't especially stimulating activities, and there's no glamor in them. They're nothing I could brag about to my friends or show off to a cute girl. (I'm working on HTML and CSS now to fix that :-P) They're just something I usually don't mind doing and often find pleasurable. I never chose to be good at programming, and I actually took a pretty snobbish and dismissive attitude towards it until I found myself making a living at it. (Looking down on it was probably what enabled me to believe I could be good at it. Pfft, I can do this, any idiot can do this, especially if he's half-autistic like me.)
I still get off on stupid tangents, though. I took a vacation several years ago and was extremely frustrated with the performance of my point-and-click digital camera. I ended up buying a DSLR, and suddenly I felt the pressure. I had to become a good photographer. My friends were taking pictures and putting them on Flickr (now on Facebook) and I had to keep up. I couldn't suck at taking pictures. Especially not after I bought the DSLR. I bought a crapload of books and read at least a third of the ones I bought. I read on the web. I took classes. I took my camera with me to places and took pictures instead of having fun. The fact that I was taking shitty photos became a huge monkey on my back. Still is, kind of. Last fall, I took an amazing trip to a place I'd been wanting to go to for years, and I obsessed over the quality of the pictures. When I got back I immediately looked through them and couldn't find a single one I liked. For weeks I procrastinated processing them. Finally I did. They sucked. It was awful. Now I don't even know if I should take my camera with me on the next vacation I take.
So please, let me indulge in the misconception that I am just a "technical type." That way I can take pictures in peace, without knowing that it is really my fault and my shame if they suck, and that I should be putting in the hard work so that one day I will be competent and my friends will not have to endure my shitty photos. No, my shitty photos are not my fault. I am just not a creative type. I am a techie. Leave me alone and stop reminding me that all my artistic deficiencies are just one big character flaw!