The first thing you need know about writing is two things.
We are all taught how to write.
We do not all write.
When you decide to take your knowledge of words from academic to creative, the first thing you need to know is you believe you can. That type of belief is paramount, and is the foundation towards building writing as a hobby or career.
That belief is built letter by letter. Word by word. Page by page. It is built on ability, availability and time. Like anything, if you want to be good at this-you must master these things. You have to be willing to work beyond what other people do. You must understand that to be gentle with yourself while building is the key to developing this belief.
Just like the Little Engine That Could, you have to believe it before you see it. Keep chugging, keep going, keep writing!
One letter. One word. One line. One page at a time.