Listen to your brain. How many thoughts are going through it right in this very moment? If you're getting a ton at lightning speed, then you probably have ADHD. Don't worry! So do I! Here are the ways I've handled it.
If you're a writer like me, and you have ADHD, then it must be hard for you to focus on one story at a time. It is for me, and I usually just let my ADHD roam free. But these are the tools I use to help me stay organized with my writing.