How to Start the Big Project You've Been Putting Off

I want to write a screenplay. I wanted to write one last year, but other work took more time than I expected, and I kept pushing "write screenplay" off my to-do list.

I know I'm not alone in struggling to make incremental progress on long-term projects or goals. How do you get started when you have "all the time in the world"? Maybe you have a project w…