when i was in middle school, i remember seeing a question on the board and feeling positive that i knew the answer. when all was quiet and the teacher asked if anyone knew the answer, i confidently spoke up, only to be incorrect.
i totally understand that feeling and know what you mean! but i would not sweat over it, it happens to the best of us and we learn fro our mistakes!
an odd combination of wanting to die, and not wanting to exist. like, i basically wanted to reverse time.