If writing is your passion, and you feel you must write or burst, then write, write, write.
And then get online; learn as much as you can about publishers, genres, critique groups, and start talking to other authors. Read their work and learn from osmosis.
Join author/publishing chat loops; you'll need the support of authors who have struggled, yet made it to Published Author status.
But most importantly, toss your work out there. Submit, submit, submit. Ask others to read and critique it. A manuscript on the the hard drive or under the bed will never fly if you don't give it the chance.
Update on Lucky:
Mourning has been postponed until tomorrow. Don't know what I'm talking about? See Molly's blog.