What helped me greatly was a little piece of paper (moleskin) and a pen. In theory i could not all things in my smartphone. But the lure of the paper as a sketc

What helped me greatly was a little piece of paper (moleskin) and a pen. In theory i could not all things in my smartphone. But the lure of the paper as a sketch material for ideas is unbroken. Just have it with you wherever you go and that paper fills itself. Do not write whole essays, just single words if needed, just to anchor your "interest" in a thought direction.