This is very important for programmers. You need to take a walk to recharge your batteries. To clear you mind. Well, it works for me anyway. Do it during lunch, after work, after dinner. On the weekend , for a longer walk. Parks and trails work best. Less crowded streets in the city work as well. Don't rush, just walk slowly. Observe things. If you end up thinking about the problem your are working on, that's fine, i…
Also look up. In city streets there are things to see above the horizontal plane we strongly tend to confine our view to.