I like it, very open and honest and shows character. I like the above idea to add a sentence or two pretty early into the essay about what it really felt like living with extreme shyness and anxiety before even taking any meds.
Also, I do notice some grammatical stuff and might wanna just reword some sentences so it flows better such as change:
"I was only ten years old at this time and I had already begun taking sixty milligrams per day just to get through my days."
"I was only ten years old at the time and had already begun taking sixty milligrams every morning just to survive my daily routine."
I would say ask your English teacher to have a look and follow their advice, but overall very good job.