Some days the most productive thing I do is leave for twenty minutes. I walk to the nearest Starbucks, get the usual, and come straight back. The change of scenery is short but it resets the mental state better than another hour of forcing focus at the same desk. You step outside, the air is different, the order is automatic, and by the time you sit down again the previous stuck feeling has usually loosened. It is not a long break and it is not a reward. It is a deliberate interruption. @starbucks happens to be the consistent place that makes the interruption easy to take without turning it into a whole production or a social event. I used to feel slightly guilty about the time. Now I treat it as part of the work system. The return is almost always sharper than the leaving. The short exit creates a clean edge that staring at the screen never manages. Do you ever use a brief exit as a reset instead of trying to push straight through the resistance?