I can +1 the "good enough" approach. I write code such that it works. When I get the urge to change something (and that is a lot), I change what I have to for i

I can +1 the "good enough" approach. I write code such that it works. When I get the urge to change something (and that is a lot), I change what I have to for it to work and make a TODO comment. I rutinely parse the TODOs and reevaluate them. When the product reaches v0.9 (i.e. only bugfixing allowed, no new features) I start to look at the TODOs and work on some of them.