As dumb as it sounds, good for you. There is this great podcast with Annie Duke about how quitting is a difficult skill and how easily we get trapped chained to not functioning approaches due to not looking at it rationally. Maybe the analogy of all the corpses on Mount Everest who ignored the turnaround time will make you feel a bit better about your decision.

https://www.youtube.com/watch?v=7jMLqcfX9dU

edit: For anyone not listening to it, the practical take away is the importance of setting kill criteria (to recognize something isnt working) upfront to combat cognitive biases and your emotions in the moment.