Give him a very broad answer or review his games or stay out of his thread then.
edit: If you've got time to waste sparring with me or insulting others, why not make something of yourself, go to his game archive, and use your 2k mind to offer him advice instead of acting ridiculous and not answering his question....
I sense mod
It sounds like you think that because your rating is close to the maximum for your group you start as one of the favourites.
If that is right I recommend you abandon the idea. Rating is not a great guide to the outcome of a tournament at the best of times; but at lower ratings and young ages it is a very poor guide indeed.
Secondly I recommend that you shift your focus from wanting to win to wanting to enjoy the event.
Everyone likes to win but treating victory as the be all and end all is not a great idea. If you lost most of your games but enjoyed yourself, helped your opponents enjoy themselves and learned something - about chess or about yourself - you would not have wasted your time.
As to your question the simple answer is no, there is nothing you can do which guarantees that you will beat every opponent. If there was such a thing the game would long ago have faded away. Happily it is still going strong and providing fun and challenges to us all.
Manage your time sensibly; treat each game as it comes, ignoring what went before and what is to come; ignore your position in the field - whether that be first or last; and make sure you are considerate to opponents, arbiters and organisers.
I hope you have fun and come away looking forward to the next tournament. :)