What should every aspiring writer know about writing?

Some form of stimulation will help your words flow better. Whether it's a movie or music playing in the back ground, or a dog thumping his tail against your foot, you need something to keep your mind active on a deeper level if you really want to excel.

Also, time is irrelevant. You move to your own tune.

Good luck! 

The process of introspection or "looking in the mirror and owning one's image" is important. In everyday language, it means to take a stock of your exact knowledge, language fluency, reading habits and then focus on what you want to write! Beware, revising, rewriting would always be important. Also, imagine yourself as your reader and you will grown an internal critic in you!