I have finished my first book!

Good for you. Writing a book is definitely one of the harder things to do for many people, whether they have the gifts necessary or if they have to force each paragraph out over the course of several days. In many ways, writing novels is much harder than writing scripts, which is what I do for the most part. Writing a novel, you have to research or at least be knowledgable in the topic you're writing about. For example, if you write a science fiction novel you have to have some grounding in science throughout the novel, even if its just simple things.
Another problem writers can face in completing a novel vs. completing a script is the length and formatting. For a script, you only need 90-120 pages in general. The bulk of that is a few paragraphs of action, interceded by dialogue. And if you sell a script, most of what you wrote will be changed with the first few scripts you sell.
A novel, on the other hand, needs to be around 270 pages at the least for the kind of novel aimed at an adult audience. You say your novel is a teen/young adult, so it has a few less needs. Another problem for some is sustaining the plot through those some-hundred pages in order to keep interest.
I wrote novellas for a long time, but could never write an actual novel of any kind. If you have done so and are working to revise and eventually publish, than I applaud you. That is something very few people can truly say they have done.

Congratulations on your awesome accomplishment! Are you going to revise it at all, or do you consider that it is complete as is? I wrote a 102,000 word novel, but I feel that it need a lot of revision, which I do not like to do.

Wow.. Finished writing your first book at your 20th age itself?
Really great. You mentioned even time.. you must be very sincere person in your duties, I hope! Great Congrats for your Great Work!
I have never wrote any book till now.
I have an Idea of writing my Autobiography after 35 to 30 years!
In between, I may write short stories for kids. not sure. must think off!
Have a nice time!

Congratulations! You go for it! I haven't finished my book that I'm writing yet and I hope I do. This is encouraging. Take care.

cool. congratulations. i know the feeling. i finished writing my first novel in 2006, and the feeling was like a big load was off my back. a big relief that i finally did it. then i spent 2 years editing and playing with it and reading it a million times. i also designed the covers on illustrator. i decided to self published, and i chose lulu.com. i had to also format the book to lulu standards and requirements to make sure it is compatible and nothing weird happens. and then i designed marketing material. and when i actually uploaded and self published my book, it gave me strength and power that i finally actually did it after doing all the work on my own. it was cool. now, i want to do a graphic novel. i drew 50 pages and stopped. i need to rewrite script. i also have ideas for future novels. but i am writing it in a notebook so i dont forget them.

Congrats! How many words was it?
I finished my first "novel" when I was 12 years old. I put novel in quotes because it was only 25,000 words, which would be a novella or children's book, but it sure felt like writing a novel to me. I also wrote a sequel for it that was about the same length. I thought a lot about trying to get them published and I started researching the publishing industry, but I never made any submissions or queries for them. I'm glad I didn't because in all honesty the books were horrible. I'm still glad I wrote them though, because it gave me practice and experience in writing a full-length story.
I started another book when I was 13, but I didn't finish it until I was almost 16. Even then, I tore it up with revisions for another year until it was almost a different book. It's about 85,000 words. This one's the book I've been concentrating all my editing and submissions on. It's been rejected by around 10 agencies, but I'm not done trying yet.
I wrote another book last year and it's about 100,000 words. I've done no editing on it whatsoever because as I said before, I'm concentrating most of my editing on the 85,000 word book.
I'm currently working on two more novels, one's kinda depressing to write so I started writing the other one to cheer myself up. I'm funny that way.
But here's the deal that many people miss: Writing the book is not the hard part. It's by no means EASY, but it's not the hard part. Getting published is. When I tell people about my book they ask, "Oh, are you going to get it published?" like I can pop my query on an agent's desk and automatically get a three book deal with Random House. It's not that simple.
I wish you the best of luck! Keep writing, and don't let rejection get you down. Don't get stuck making revisions forever either. At some point you're going to have to declare it as good as you can get it without the help of a professional editor and make the plunge into submitting.

good job! when i was young i had that flair for writing too, and it still haunts me to go back and do it during my free time. i would love to do children's books. when my kids were young, i had them help me out on my school project and we completed a script when we were toying with the plots & scenes. it was a sci-fi environmentally-inspired working idea which i never got the chance to develop into a book. maybe soon when i ran out of things to keep myself busy with.

That is just so awesome, congratulations to you. So what is your 2nd story going to be? Is it hard to find a publisher in your area? That's so cool, you've left with editing process and you can go with publishing it. All the best to you, yeah..

Oh, how I envy you so much! I started to write my first novel in september 2007, but until now it is not finished yet. It's a big shame, I know lol. I believe it's because the lack of commitment and dicipline from myself. I still write a few paragraphs now and then, but still it is far from being finished. And I also think that my writing skill begins to vanish. But I promise myself to finish it though, no matter how long it will take. So, may I ask how do you keep yourself motivated to continue writing?

Congratulations! That's a big achievement! I hope you'll get a good agent and publish it. You're hard work will be paid off soon.