"I look at it this way: I never took lessons to play the drums. I never took lessons to play the guitar. I just sort of figured it out. I think that if you’re passionate about something and you’re driven and you’re focused, you can do anything you want to do in life." --- Dave Grohl.
This is true, and the best advice you'll ever hear. I've never taken a photography lesson but I love it. What you need to understand is that I've literally taken several hundred thousand shitty photos. And somewhere along the way I got good at it. The coolest thing is that in a year I'll be better. Ten years from now I can only imagine the quality of work I'll put out. If you're lucky enough to stumble upon the thing you love you'd have to be six kinds of an idiot not to pursue it. Even if you never get good you'll have "wasted" your life being happy, not such a bad fate.