You have learnt one of the most valuable lessons of the exam system - if you fail an exam, the 'music police' don't come in the night and confiscate your instrument and enforce a 'no more music for you, ever' injunction. Keep on enjoying, look at exams sooner, later or never as the mood takes you, and have fun
You are so right. It feels like the ultimate disaster at the time but then you realise you're still alive and nothing more terrible has happened or will happen because of it. Someone (I think it may have been Confucius or maybe Gandhi) once said that he who never made a mistake never made anything. Frenchie, you seem very aware of what mistakes you made and no doubt you won't make them again, although you may make others. All part of the great learning process.