"Write what you know" is great writing advice, but it's also the most misunderstood writing advice. So, bear it in mind, but don't take it quite as literally as many people do... "Write what you know" can have more than one meaning, which is something the post I linked to explains in more detail.
Speaking of writing advice... If you're doing NaNoWriMo - and even if you're not - here's a post that looks at some of the terrible advice, which is disguised as essential requirements if you want to be a writer. It's a post that agrees with what I've said several times in the past about how every writer is different, and your writing routine and habits should reflect that, and be tailored to your own requirements and preferences.
Regardless of whether or not you're doing NaNoWriMo, or what your writing routine looks like... Are shiny new ideas distracting you from your current writing project? Then read this post to learn how to deal with shiny new idea syndrome. Although, whether you're being distracted by shiny ideas or not, you may be interested in reading this post that explains three trope tactics to please your readers. WARNING: that last post I just linked to contains strong language.
Do you have a cat in your story? Or, perhaps, you just own a cat and want to figure out what it's trying to tell you? If either of those applies to you, take a look at this post on understanding feline behaviour.
Are you on Goodreads? If you are, there are two possible reasons why you may be interested in this guest post about doing Goodreads giveaways. The first reason is because you may want to enter for a chance to get a copy of the book. The second is that if you're a Goodreads author, you may be interested in the instructions on how to set up your own Goodreads giveaway. Either way, check out the post. Also, whether you're on Goodreads or not, if you're interested in the work of self-published authors, or are one yourself, why not sign up for the Indie Publishing News newsletter by Plaisted Publishing. They have both a screen reader friendly version, and a general version, so you can sign up for whichever is best for you.