I'm running into a similar problem in the novels I'm trying to work on now. I used to always get stalled out in novels, because I'd try to outline. Knowing what *had* to happen killed the process for me. I'd end up staring at a blank page, thinking, They have to get up this mountain, but I have no idea how, let alone how to make the scene interesting, but if I skip it, it will feel like a cheat, or, They need to disrupt a council meeting, but I know nothing about council meetings and can come up with no realistic or plausible scenario for all three characters to wrestle an invite or sneak into the palace to do this.
Logical/practical how-tos are a big obstacle for me sometimes. I suspect they are for other writers too, which explains the plethora of sleepy or bribeable guards or mysterious sewers or forgotten passageways beneath palaces and cities. Oh, and those mysterious mountain people that either capture travelers or help them out right before they die of exposure. A fierce determination to avoid such cliches means I sometimes write my characters into corners.
I finally managed to complete a novel by just writing and not worrying about where the story was going exactly. If it felt like they needed to have a conversation, they had a conversation. It it felt like they needed to go do something, they did it. I got a huge, overwritten mess, which I then trimmed and rearranged into a coherent story thanks to a lot of help and feedback from critting partners and beta readers.
But now I have two new novels I'm working on, and even though I haven't outlined, I have a clearer idea where each story "needs" to go. I also know a lot more about things like plot catalysts and so on, and where in the story certain things need to happen.
So I'm about 15% of the way in, and I need for something to happen in the scene I'm writing that will set my two protagonists on their separate paths for the middle part of the story.
And I'm hung up, because I can't figure out how to make it happen in in one chapter in a way that doesn't feel contrived. Argh! Or I'll get hung up because I'll be consciously thinking things like, Oops, two dialog-heavy chapters in a row. I need one with more action now, but how?
The best suggestion I have is to skip the chapter or scene that is bugging you. Just write a short summary of what you feel *must* happen to get the story to the next place. Then start with your next chapter. Sometimes creative solutions to earlier problems will shake loose when you write on.