I didn't have a car to drive in college, and with an infrequent public transportation system, I got used to walking. The repetitive motion of walking through my usual paths gave me time to clear my head and calm down in the middle of an agenda-filled day without worrying I'd miss my destination.
Walking also helped me see my campus differently. I noticed when my favorite trees started changing color. I paid attention to the sunrise reflected in a puddle. Not only was the repetitiveness of walking calming, it made me a more observant photographer, sensitizing me to unique compositions that I would've easily overlooked had I zoomed by in a car.