Tony, I’ve kept a journal for the last 484 days (in a row!) and track this with Coach.me. I don’t have a daily prompt but do freewriting. I mention this in more detail in my article on Medium under “Low-Stakes Writing.” Sometimes, nothing comes from the writing. Other times, I start freewriting and dig into areas I didn’t expect. These areas could be ideas, challenges in my life, or a surprise. It’s been a huge help.