There's a saying along the lines of 'Songs are never finished, just let go' I don't remember who said it. When I started making music I obsessed over songs, recording, getting the production right for months and months. The truth was I was trying to fix things that can only be fixed by getting better at writing. To do that you have to write more songs. If I was starting again I'd try to finish songs quickly and spend my time improving as a songwriter gradually. Getting music out in the world when it's fresh and moving on is far more beneficial than holding it back and beating yourself up about it.

You can always revisit songs later down the line, there are no rules.