Filmmaking / Directing : Problems/Challenges in writing & pre-production by Prathamesh KriSang

Hey Fellow Filmmakers, I'm sure a lot of you must be writers & directors like myself here. I wanted to know what are the major challenges that you face while writing the script as well as bringing it to the pre-production phase until it is ready for production. For my last film, I had a range of difficulties. I'm sure, no matter which part of the world we live in, there must be challenges. :) Be open and write down any problem that you have faced in past or are facing right now. From creative to collaboration to business part of filmmaking. Let's see how common are our problems all across the world.