Song-writing...
It's what I do when I've got time on my hands and inspiration strikes.
It's not really difficult. All you need are a good grasp of the chosen language, a lot of angst or whatever emotions you're feeling right now, writing materials, basic knowledge on chords-reading, ability to play at least one musical instrument, and most important: loads and loads of inspiration.
Easy, right...
Well, if you're feeling discouraged right now, don't sweat. Take me for example. I don't know how to lay the chords, but I can hum a tune. If you have a recorder (whether it's a tape recorder, your pc or even a studio!), you can come up with the lyrics and the tune, then find someone who's willing to do the chords for you. Though I doubt it if it would be free. Maybe they'll ask for a free meal or something...
You can write about almost anything. Your dog, your day, your whatever and whoever. Just make sure that it's got substance, not just a bunch of meaningless phrases and sentences.
With those in mind, go on! Write your song and sing it to the world. Or sell it!!!!!! Bwahaha!!!!