[ OT ] Anybody here who has written an entire book without doubting your plot , or fixing a doubt somehow ?

My advice is to simply start writing. It does n't matter if it's shit. Just start. The hardest part is the blank page at the start, and once you've overcome that, you'll get a flow. 
 
 The point is, if you do n't write you'll end up procrastrinating, waiting for that `` perfect story'' to pop into your mind, the story that you believe will practically write itself because its so good. That'll never happen. Every book starts with a base concept, an idea, and is built into something good. 
 
 You need to remember that every book starts out as shit, with a shitty first draft. But a first draft is still a first draft. If you write a shitty first draft, you're still miles ahead of other writers who still procrastrinate, and you're miles ahead from when you're started - now is the time to start polishing your jewel. 
 
 Read it, edit out the bad parts, the irrelevant parts, and if you end it with a decent second draft, send it to a friend or someone else for criticism. You will *always* be biased towards your own writing. 
 
 To your main question: if you doubt your plot and do n't have a passion and drive to write about it, it'll be shit.
