Here is the deadline I want you to keep in your head.
What do you really want to be doing with your life? Is it the job you are in or is there more? If so, then think about how old you are and what you want to get done in this world.
I don’t know you but I don’t think that the idea stuck in your head, or the half-finished draft, or the script waiting to be edited is your only one. I think there is more. and the sooner it is done, the sooner you can move onto the next one.