Joe Buhlig writes:
If you put a load on a muscle and let it recover, it will come back stronger. Focus works the same way.
The more you work at staying focused, the more you’ll be able to focus in the future. Your focus muscle gets stronger.
This is exactly what I did with my writing. I made sure that I had time every morning for writing. At first, I was only getting a few sentences down – I couldn’t stay on task much longer. Over time, I was able to finish a paragraph or two. And now I’m able to outline a post and write the majority of a first draft in a single morning.