I have a problem in that if I ever tell people about my story ideas, I lose motivation and eventually stop working on them. If I do not tell them I feel like I have pressure to get the story "out there", so I will work on them a lot harder.
The problem is this includes things like beta readers and Writing SE. Which is actually a very big problem as it means if I have a story problem and I cannot solve it by myself I either risk getting stuck and unable to finish the story at all or I ask someone for help and risk losing chunks of motivation. At the same time, like all human beings, I've found positive responses to my work makes me want to continue writing. This isn't even getting into how criticism in general helps improve writing by pointing out bad ideas and areas to improve. If I write in a sterile environment I have nothing to encourage me to continue or help me course-correct.
This is what has happened with my most recent story. I had a story idea based on an old outline of mine and spent a few months in a flurry of activity getting works done. Then I hit a problem I couldn't get around and got desperate enough to seek out help from other people, my current beta readers. I sent them drafts of chapters that are not even entirely finished because I can't figure out how to frame or word certain scenes, and I am not making any progress otherwise. Now I am concerned that I will never get these chapters done because my motivation to "fill in the blanks" is dropping and writing is becoming less of an excitement and more of a chore (with the quality of my work suffering as well), and it's been this way for months. Which to me is bad because I really want this idea to be the one that gets completed more than anything.
My question is: How do you deal with the Morton's Fork of, on the one hand, telling people about your story causing you to lose interest in it and, on the other, lack of positive interaction or critical feedback from others causing you to lose interest in it and stop writing anyway.