Remove yourself from the tale. Work on something else for a time, or take a break from writing entirely. Go do something else you love to distract yourself from the narrative and your feelings about it. Participate in some of your other activities, or spend time with friends and/or family. Eventually, your frustration with the story will fade away.
If you can't find any other way around it, then probably the problem lies within the story itself. Maybe it's not good enough to be published? Perhaps it's too complicated? Or maybe it's just not interesting enough to hold someone's attention through more than one chapter? There are many possibilities, but none that require fixing what's already written. Instead, try to figure out what you want to say and how you want to say it before you start writing.
The more you think about it, the harder it is to write a novel. That's because once you start, you can't really stop. The more you try to force yourself to quit, the more frustrated you'll be when you realize you need to keep going. So instead of looking at what you hate about the story, why don't you try looking at what you love about it? What makes it special? What would make someone want to read thousands of words in one go?
The more you know about your story and what drives people to read, the better you'll be able to communicate those things to the reader.
If none of the preceding tactics work, getting away from your desk and clearing your thoughts is sometimes the greatest approach to overcome writer's block. Writer's block occurs when your mind is overloaded by all of the ideas regarding your daily life that crowd your head. In order to get past this obstacle, it is necessary to step back from your writing for a while and give your brain a chance to process everything else going on in your life.
Famous authors have used many different methods to overcome writer's block. Some use a strict routine to avoid being stuck in a loop of thinking about their story forever. Others may listen to music or watch movies to get inspired. Still others will simply write for an hour each day and not worry about quality or perfection. The only thing that matters is that you continue to write even if no one is reading your work or if it isn't good enough to be published.
Writer's block is common for new writers because there are so many ways to approach any single topic that it can be difficult to know where to start. If you find yourself stuck, it may help to ask yourself questions such as "What is the main idea behind this story?" or "Who is my audience?" This exercise can guide you in creating a structure that keeps your reader interested until the end of the story.
The most effective way to overcome writer's block is to simply write anything that comes to mind.
Approach the book with an open mind.