Writing a good song is part luck and part experience. You have to learn your trade mostly, and that includes test driving it in Folk Clubs, and reading the reaction and not being brow-beaten by criticism.

Writing a standard is part luck, and a lot of groundwork. You have to get it out there, lots of exposure and it has to chime.

I have seen earnest attempts that clearly fell at the first hurdle. And even in Folk there is the dreaded fashion syndrome. The song may have a shelf life that is not obvious without hind-sight.

IMNSHO songs that want to be born have a better chance than you wanting to write a song, let alone one with something that is not easy to define. Good songs carry the passion gene, and even that is not enough for the highest accolade.

But Hey! Don't let nay-sayers like me stop you, as I always rail "the word NO kills creativity".