I'm half way through writing a novel and when I tell people how I'm writing it they think I'm crazy.
For starters, I don't sit and plan every chapter. Instead, I start with an idea. This can be the premise of the book i.e. woman is accused of murdering her boyfriend who she knows isn't even dead.
Then I just run with it, using the scattergun method of writing.
In other words, I write whatever I'm driven to write. This can be a scene from any part of the book.
Sometimes I have the ending before I have the second chapter.
The upside of this method, is two fold -
1. that I never get bored, so I don't think the reader will either
2. my writing is crispier and fresher because I'm not forcing my writing
Of course, there's a major downside -
eventually I will get to the point where I have to write a certain part; to connect up the dots. Writing those bits can be hard, but then writing is hard. You've got to bleed onto the paper.
The scattergun method might not be to everybody's taste, but it works for me. And you've got to stick with whatever works for you, because there are so many methods that don't work.
If I had a penny for every time someone said "I'm going to write a novel" who didn't, I'd be a millionaire.