Hi Hannah,
Sorry you were feeling so sad when you wrote your poem, this is a poem for catharsis not critique because it was written out of personal need ,so as such it was what you needed to do at the time.
I will only make a few comments because of this.
Title dont waste a title using words you are using in a poem as repetition make a statement that is not in the poem use it as an added metaphor tempt the reader.. make your title work.
If you wanted to really build this piece into a great poem you would need to consider what you have written as the bones of this poem and add a little more story as a reader I get that you are sad but I dont feel that sadness as much as I could.
However you wrote this at a time you needed to write it so it might be better to tackle a new sadness poem and leave this as a record of your feelings at that moment. I think that is very much a decision you have to make. If you would like to develop this more then I would happily give you some suggextions.
Sam

...so my comments are limited.

1. In Line 6, you should say "better than I", not "better than me";
2. I feel the final line is superfluous and also open to total misinterpretation by anyone outside North America. In non-American English, it means "I'm mentally ill" and I am sure that's NOT what you meant.
.
Best Wishes