When the stories are not going, it may not be the time for to write it. It could also be that you are avoiding it because you are scared of screwing it up.
You need to make the choice whether or not you are willing to let it happen. It means you need to be willing to break.
If you don’t feel it’s the right time, put it to the side until then. Now, pick up the next project and get to work. Don’t stall or else your mind is fooling you into believing you can’t write.