I want to save money to go to Ocho Rios Jamaica for my 40th birthday In October the problem is no money?

I want to save money to go to Ocho Rios Jamaica for my 40th birthday In October, the problem is I work from pay check to pay check those any one have a sugestion on how to save at least $2000 by then. I make $900 a month and my rent is $440 everything else varies I really want to go never been on a vacation like this before thanks in advance.....