If(hopefully not) you do not get into a selective school what will change in your future and how will you adapt? I'm writing this so people understand it is not the end of the world if they "fail" the test. Yeah its a huge bummer if you didn't get in and all the effort, money and studying would have felt gone up in smoke, but you cannot dwell on the past for long. Remember, all those logical deduction skills, writing pieces, and fast math skills are all things you did for the test, and even if you do not get in those skills you worked on will help you miles in the long run.
I know results are not even out but I just want you to think about a different path for yourself.