It made me realise that maybe that is a writer's lot. You spend your life wanting to change anything you have written. It is never finished. It could always be tweaked just one more time. This is not restricted to fictional writing though, it is just as applicable to any academic writing you do. Indeed, any writing - even your shopping list. Face the fact your life as a writer is going to be one long rewrite and edit!
This is a piece called La Serenisssima by Loreena McKennitt. It was given to me by a friend who said it was great to write to...I might do some re-writing to it!