Writing a novel is a marathon. It takes months, if not years. You have to be in it for the long haul.
You have to train for a marathon. If you want to run a marathon you have to gradually build up to it with shorter runs at first. Gradually, inexorably, you find the skill and endurance to persevere. To keep going.
You have to train for a novel. You have to write, and write, and edit, and rewrite. The long form of storytelling will ruin and exhaust a novice. You’ve got to build up to it.
Too many marathons will ruin you. Your body will fall apart. Joints and bones will give up after repetitive pounding against concrete. You can’t run a marathon all the time. But you don’t have to stop running.
You can sprint.
There is freedom in the sprint – the freedom of laying it all on the line in short bursts. No time for boredom. No time to think of giving up. Just go.
Novelists need to sprint sometimes too. Write a short story. Write a screenplay (which, in comparison to a novel, is a pretty short endeavor). Give yourself time to recover and do something that is joyously brief.