The one thing I really love about this site is that it allows subjective answers, unlike many of the other Stack sites. So here starts my rant. Please, get yourself a cup of coffee or light your cigarette because it is going to be a long read or maybe just move on if it is tl;dr.
Ever since I was a kid, I was interested in learning new things and I guess we all are. The zeal to learn new things is what I guess is 'detrimental', if I may say. When I was a kid, I wanted to be a writer and I wrote my first 'meaningful' story in 7th grade; it was about D-Day and had a nice plot twist at the end. Somehow, that faded away.
I am now in a university and studying computer science. Recently I developed an interest into photography but since I could not afford a DSLR, that sort of faded away. However, I take pictures with my phone and edit them to make them look better. I focus more on the composition and the use of natural light since I know I cannot capture a lot of detail with an 8 MP camera. That's when the idea of being a 'photo essayist' struck my mind. It combines two of my most-liked passions; software and computer being the first.
Photography and writing are about just one thing : human behavior, at least to me. Right now I have the option of taking an online course on psychology or on Android programming; dilemma.
I know that the one who begins a lot achieves very little and that mastering one trade is better than being a jack in many.
So, now stands my original question: Can one really turn hobbies into side-careers? I havent even turned 20, yet !
P.S.: I try to be as articulate as possible whenever I post on any Stack site. I consider it practicing writing and I also maintain a blog even though nobody reads it.