There are two schools of thought.
#1 - Life is too short to be miserable, stuff it in a closet and move on. (I was making a baby blanket, got to the point I was sick of it, moved on, found one I love, finished in no time)
#2 - Pull up your big girl panties and finish the darn thing. You will be a better person if you finish what you started. It is a learning experience. Strong people come through in tough times - blah, blah, blah
You actually know your answer. Pick which is you.