Today, write “I believe” at the top of your page and keep writing about what you believe to be true and what you believe in, and see where you land. See how many ideas are on the page when you’re finished; all things that might be saved to write about later.
This idea is lovingly borrowed from/inspired by part of what Kelly Diels does online. If you don’t follow her, I hope you consider doing so. She’s got excellently unconventional perspective about the way things are done online.