That’s the worst. I say go for a walk by yourself without music or talking on the phone. Spend time in a quiet place like a museum or deep in nature if you can. Rare art bookstores are always excellent for inspiration. Try spending quality time with your dog - growl at them and play like a dog. I get inspired by milou’s childlike vibe - something all dogs have! Talk to an older, wiser person and ask them to tell you their story from beginning to end. Listen and give that person your undivided attention.