I'm someone who likes to do things to the best of my ability. Once I make a decision - I commit. But a lot of times we over-commit ourselves, or our goals or priorities change, but we still feel driven to finish what we've started. Quitting can feel like failure, and dealing with failure is hard. Sometimes, it's better to cut your losses and quit.
You should quit before you fail, before you spiral, before you drive yourself off balance. There's no need to feel stressed out or overwhelmed based on something nonessential. Quit as self care. Quit to preserve your mental health, to stop wasting time, and to focus on what will move you forward. A little inspiration and motivation for ya :)