When I first started writing, I thought all you had to do was write something and get it published. HA! There is so much more to having a book get published!
Have a great critique group. If you don't have one in your area, there are some online (because sometimes you will think it sounds perfect, when it just sounds like pretty gibberish).
Go to writing conferences. Not only will you meet awesomely-cool people, you learn the tools to have a great book! (Plus you can go to pitch sessions and meet uber-ific agents and stuff.)
Remember you will have to write, rewrite, rewrite, rewrite......(why didn't anybody tell me this when I started?)
Get a good writing snack. Why? Because most writers will start eating when they are thinking. I snacked on chocolate chips for years. Bad idea! I'm still working at getting off those last ten pounds (I hate you skinny Pilates instructor. hee hee...Just kidding...please don't kick me off the stretchy team.)
It takes time. This is the biggest newsflash I can give you. It takes time to write, time to revise, time to edit, time to query, time to .... Oh the list goes on and on. So keep yourself busy with new projects and stay excited for those stories.
Wish I had known all these things before. Now I know.
So my writing friends, anything I forgot? Anything you wish you would have known about before picking up that creative bug?