Being an active part of the world is a laxative to a writer, whether it is a walk in the woods, a spirited discussion with peers, or involvement within the community. Don't feel guilty. Accept blockage as part of the creative process. Don't waste time panicking or feeling guilty. A walk is a good idea.
Travel is even better.
If you can't come home with an idea then you're really lost. Selfindulgent excuse Being blocked is a selfindulgent excuse for laziness that artists seem prone to. I am no exception but the following has helped to minimize it. The moon and the stars do not have to be properly aligned for you to create. The lights and the weather do not have perfect.