Learn from what you did wrong, study and retake it if you want. You can take the SAT's as many times as you want. Also, you get to choose which one to send to colleges. Failing can feel awful but you can't have success without it. And really failure and success are just concepts. They are how you measure it. So maybe change how you measure success. Like I am just proud of myself for finishing it it was very stressful but I did it. If I didn't reach my goal then I will just learn from it and do it again.