How did any of us learn to play in the first place?
I am pretty sure not one of us learned the scales, the theory, and then sat down and wrote a song of their own.

I know I played music written and performed by others, you have to to really get to learn how to play in the first place, even if you do the other stuff of scales and theory as well.
If you can then have the talent to write new stuff, by all means do so. However if wanting to make something out of that you have to write music and lyrics that people want to listen to. You might just be telling your story, your life, but if you do it in a boring fashion, then no one will want to listen. Might be better to invent a story if you need to, then put a bit of passion into it and make it lively and interesting, get the audiences attention.
Another approach which works well for some, is write stuff with a comedy punch line to each verse, or in general just make the story a funny one. Though that takes both musical and comic talent.