I know how you feel about having writer's block. It can be an uncomfortable feeling. Yet, do you have writer's block? I at times feel I have writer's block, although I journal, thus I am writing. And, I research topics and write about them. I write poetry too. The trick is I don't publish a lot, but I am writing seeking to better my ambition.
Back to writers block itself. To me writing is guided by four main elements; stimulus, inspiration, motivation, and actually doing. We are stimulated all day long by our senses, emotions, and spirituality. The question is when they inspire a person with a novel idea fed by a hunger to share it. The hunger to share is motivation. Then it is a matter of doing. To do that some perceived value and worth becomes a driving force.
Remember sharing with yourself through writing is having an audience of one. Sometimes that is the most important, thus a reason for journaling and exploring your novel idea. If one is inspired, motivated, and journals then one is doing. Many times a rough draft comes from journaling.
Some tricks for received inspiration is to keep a pad of paper handy to write it down for later. Then reviewing it leaves only motivation or putting it on the back burner. You may be amazed how many times the same inspired idea or thought arrives becoming motivation.
Another is when there is inspiration to write down the main word or put it into a short phrase on a word processor page or a spreadsheet page. Then, as quickly as possible and spontaneously write words and very short phrases until you are exhausted. Take a break go for a walk or a have a cup'pa tea emptying your mind. Go back later and read your list allowing it to draw out likenesses, parallels, and differences. Make a creative mind map of it. Led by those thoughts begin to compose your work and then create a first draft.
I hope that helps and I hope you get passed your feelings of being stuck with writer's block . . .