I understand that you also have felt nostalgia. However, you showed such nervousness, sadness, and dejection that it was an immense pain to read your little letter and understand that you were suffering.
It is truly heart-wrenching to see you in such a state. Your emotions seem to be overwhelming you, and it makes me want to reach out and offer some comfort.
I hope that you can find a way to cope with these feelings and move forward. Maybe it's time to take a break, do something you enjoy, or talk to someone you trust.
Remember, you are not alone in this. There are people who care about you and want to see you happy and healthy.
Please try to be kind to yourself and give yourself the time and space you need to heal.