1. Keep in tune with the publishing world by reading blogs, following agents on Twitter, etc. Also: avoid anything that distracts you from writing, especially the Internet.
2. Learn from the classics. Also: the classics violate most of the writing advice you get, and would be largely unpublishable if written today.
3. Write every day, no matter what, even if you don’t feel like it. Also: take vacations now and then, or you’ll go crazy.
4. Don’t obsess over the rules of the querying process. Also: the rules of the querying process are staggeringly complex, vary from one agent to the next, and will determine the success of your career.
5. Make your protagonists realistic and believable, and let your writing celebrate the beauty of all human life. Also: your protagonists have to be strong and active or nobody will like them.
6. Your novel should be deep, subtle, and complex. Also: to make your novel marketable, you should be able to sum it up in one sentence, and you should write the novel with that sentence in mind.
7. You can’t trust your instincts about your own work, so you need to get your manuscript critiqued. Also: when listening to critique advice, trust your instincts.
8. Don’t send off your novel until it’s your best work. Also: don’t sit on one novel forever.
9. Don’t say “there was,” avoid passive voice, avoid adverbs, and use only the “said” dialogue tag. Also: craft a voice for your writing that’s uniquely you.
10. Use all forms of social media (Facebook, Twitter, blogs, Google+) to promote yourself, even if you don’t want to, because that’s what authors need to do. Also: if you’re not passionate about social media, it will show, and using it for self-promotion will fail.
11. Remember you are unique and special. Also: remember you are not at all unique or special.
12. Pour your passion and soul into your writing; base it on your own ideas, feelings, observations, and life. Also: don’t take critiques personally, because they only criticize your work, not you.
13. Show, don’t tell. Also: telling uses fewer words than showing, and you should use the fewest words possible.
14. Don’t be redundant. Also: if you only say something once, the reader will forget it.
15. Give your readers something fresh and unusual, something outside of everyday life. Also: write what you know.
16. Listen to writing advice. Also: don’t listen to writing advice.
There…hope that helps!