As I'm plotting my third book I have come to the conclusion that I will follow my own rules, and I will only take advice if it's applicable to me.
When a writer first starts writing, it's a common procedure to follow the advice of everyone as the writer only wants to do their best. That's understandable but it's important to follow your own instincts too. As a writer gains confidence in their ability to write, the realisation will come not everything works for each individual. Writers will find that certain rules contradict everything they've heard from another author, so it's important to keep some perspective. As long as you apply common sense you will be fine.
I only follow two rules. First, I make sure I only write for me - my number one goal is to entertain myself first before I even attempt to entertain anyone else. And secondly I make sure I write every day. I treat my writing as a full time job, and in full time jobs you work every day. Sometimes if my writing is going really well I will write over the weekend. Writing is one of the most important things I do with my life so it seems obvious I treat it as a career.
The most important thing you can do is find out which rules work best for you. Then there will be no stopping you.