There's a lot to be said about writing, and every writer has his or her own rituals, tips and techniques for getting productive. Every author you ask will undoubtedly have something to add to questions such as "How do you maintain a writing schedule?" or "How do you get ready to write?".
I imagine that was what Yoav Ezer
must have thought when he decided to approach over 90 authors (including yours truly) to ask them these (and other) questions. The result is a massive article containing a huge list of writing productivity tips
If you're serious about writing, you should go check it out. Even though I was one (out of many) contributors, there were plenty of tips I found useful.