When I was in my senior year of college, I looked around at all the professors I knew, and all the other writers in the writing program. I knew that I was just as smart or talented as any of them, and I had something they didn't have -- or, rather they had something I didn't have. I have no common sense. I went for this book thing relentlessly.
I outlined, built a world, built characters, built early sketches and early scenes. I kept working on it. After about a year, I had a very solid first draft. After another year, I had a real, honest-to-goodness book on my hands. I started sending it out, and collecting rejections.
I was rejected by Tor, Daw, and Baen. I was rejected by many, many, many literary agents.
The day before my 25th birthday, Wizards of the Coast asked to see the full manuscript. One year later, they made an offer.
I then turned around and made a list of my dream literary agents. I cold-called them. One of the agencies that hadn't initially rejected me prior to my offer read my book, loved it, and picked me up.
So, this all started when I was 22, and I'm 26 today. And I've said it before, and I'll say it again:
"NEVER GIVE UP, NEVER SURRENDER" - Commander Peter Quincey Taggert
(This timeline is not to be trusted for future reference with WotC company, as there were mitigating internal things happening that slowed them down. It sucked, but it's long over, and isn't it cool how an editor championed my book for a very long time until the smoke cleared? I think so...)