you overthink everything
you can always retake the act
stop being a pusillanimous individual, you're almost an adult.
its time to start making important decisions / doing important things. you have to get over it
These pretty much
The only thing affecting your future is you. If you're going to allow your panic attacks to get to you and destroy you and your chances of success at a good future, then you're the one to blame, not the test.
You should really get some counseling on your panic attacks and you overthinking stuff to the extreme to where it affects you in ways it shouldn't. You can always take the test again too