When you go back to unfinished songs from several years ago to work on them, do you ever come across any that make you go "Wow I don't relate to that anymore" or "Wow I wouldn't write a song like that today"? If you do, do you still decide to work on them/does that make it any harder to work on them than if it was a song you still related to? If you don't, disregard that last question
sometimes they can be transformed into something that works for me in the present day