Heyy, Good day to ya!
First impressions: Mmmmm, interesting interesting. I like this one. This is fascinating since I have not really seen many people talk about or try to express the sort of sadness that positive memories leave behind. Usually classified as nostalgia, but i think there's more to it. That sort of Childish wonder is lost when we humans age and the innocence is lost.
"like the emotionally-clad glitter in my hair, i shall never be fully rid of you."
Interesting simile, how seemingly impossible it is get rid of glitter from anywhere compared to memories. It's interesting because, while initially, both feel like they will last forever, eventually they disappear.
"i'm left to tame the remnants of my memory, washed down the drain,
but somehow still ever-present."
While i am not certain of what memories you speak of, it is true that the remnants are fragments, we often forget the entire picture and remember only the best or worst parts depending on what kind of outlook the person has on life.
"you are nothing but a caricature of my childhood delusions, a mere whimsical evermore
and i will try to learn to live without you though you've never left."
Even though the previous line feels like it is going in the negative direction, as though the narrator [or you] wants to dismiss the memories as childish dreams, the fact that memories will always stick and the admission from the narrator shows how even if we try, we cannot dismiss what we experienced. Sometimes it is better to live in Childhood delusions, it really does bring a different perspective on life.
Thanks for reading and have great day!
Edit: I saw the description, a college rejected you on Christmas? Or was it something else? A bit confused on that