And we're not talking about back flips and doing the splits. (Although that's being flexible, too.)
One of the things I've learned about writing recently is that you have to be flexible. There are just too many variables to life to have a rigid idea of what writing is and how to do it. What works for one person really won't work for me. My writing process is unique, just like what I write is unique.
As a mom, I cram in my writing time. I have to take what I can get between boo-boos and naps. Some days, there's a bunch of time, but other days, I'm doing really great if I get to open the file and read what I wrote last time. If I weren't flexible, I could easily decide that it wasn't worth it. I mean, who wants to keep working on a project that gets sporadic attention and may take months to finish?
Not only do I have to be flexible about when I write, I have to be willing to bend on what I write. This has become especially true with revision. I have to set aside what I have already written and look at what would be better. Keep the options open. Avoid being rigid in my ideas. Being flexible keeps the story growing and changing until it's something that I never dreamed it could be and is infinitely better than what I first envisioned.
So what does flexibility mean to you? What are you flexible about?