Did you know that most of the smelly/bad code is written when code files are created, not gradually upon code updates? I didn't but I found research about it and wrote this blog post. Is it because we think "we will fix this later"?
"Make it a practice to present and discuss each implementation at one-third completion", wrote Adam Tornhill in his excellent Software Desing X-Rays book. Since reading that book I've been thinking about it, and I wrote why I strongly agree with it. Practically it improves code quality (which I value really high).