How does one cope with failure?

Failure is a strong word. Think of your low or less than satisfactory grades as opportunities do discover your weaknesses and rooms for improvement. Learning is a continuous process. The results of your test will not determine who you are or your worth as a person, unless you let them be. By changing your perspective, you will hopefully approach your future test with greater enthusiasm and less fear. It also might help to know that your success in life might not be correlated by how academically smart you are. Anyway, treat your learning process as an discovery process and not solely for the test marks. Hope this helps.