Are there any writing and creativity newsletters that focus on finding inspiration and improving creative habits?

Yes—there are quite a few newsletters that center on inspiration, creative practice, and building better writing habits. A few well-known ones:

• The Prompt — focuses on writing prompts, inspiration, and creative momentum.
• Letters to a Young Creator — aimed at helping creatives stay motivated and reflective about their craft.
• Brain Pickings / The Marginalian newsletter — lots of thoughtful essays and ideas that can spark creativity.
• 5-Bullet Friday — often includes books, tools, and ideas that can help with creative thinking and habits.
• Daily Creative — short creative prompts and encouragement for making creativity part of your routine.
• The Creative Independent newsletter — interviews, essays, and practical advice for sustaining creative work.
• Austin Kleon’s newsletter — good for creative inspiration, process, and staying engaged with your work.
• The Story Grid / writing craft newsletters — more craft-focused, but helpful if you want to improve as a writer.

If you want, I can also narrow this down to:

1. writing-prompt newsletters,
2. habit-building for creatives, or
3. more reflective/inspirational essays.