An excerpt from an article by Michelle V. Rafter:
Here's what Rowling and my Harry Potter experience taught me about writing:
1. Persistence counts. Rowling got the idea for the Harry Potter in 1990 and spent the next 17 years working on it before finishing Harry Potter and the Deathly Hallows in 2007. Seventeen years that's as long as it takes a kid to go from kindergarten through high school.
The takeaway: You may start out loving a project but the day may come days, weeks or months into it you're so bored, frustrated or fed up you want to scream or put it away forever. But look what can happen if you gut it out.
READ THE COMPLETE ARTICLE AT: michellerafter.com/2010/11/23/…
As comic book editor Kwanzer pointed out, these same insights / lessons can be applied to making comic books