What I do is I write down words that pop into my mind, then I mix them up until I like the order. I figure out how fast or slow I want it, then I start playing my guitar until I have a flow I like. Then, I show it to one of my sisters. Usually, they love them and they give me tips on it, like some words don't fit, or the music should be slower or faster. Writing music is a lot like a puzzle. So just have fun with it.
How do you write a song?
How do you write your lyrics? How do you write the music? How do you put them together? Which do you write first? The music or the lyrics?
Just share your ideas; it might help someone out who is having trouble.