I liked that you summed up all of your feelings here, not many people can do that while at the same time creating something worth reading. Nice job with the onomatopoeia at the start of each line, it added emphasis. I particularly liked the line
"Gasp!’ this hurts…/but the knife feels fine…/I feel much better…/I feel more alive." Please keep writing.
this seems almost like a diary, with lots of different entries. I love the pattern you used, with the sounds at the beginning... v powerful good work x