Learning to play an instrument or learning how to sing is one thing, but writing your own songs is something completely different. Have you ever written a song? What instruments(s) did you use? What was the song about?
I grew up playing in bands throughout my teens, where I usually wrote the song lyrics. I also wrote a lot of songs on guitar as well. I haven't actually written a song in years, I feel I could if I had something I wanted to say through music.
Yes, as a teenager I wrote several. For voice and piano. I have also adapted the words of many songs to suit my feelings/ situation, or as a parody of the original.