I work from home mostly and too easily don't look up from my laptop all day especially close to an event. During working hours I try to take short breaks to put the kettle on, hand some washing out, go and post a letter or for a short walk. Anything that makes me step away just for a few minutes. Some of my best ideas come when I'm not staring at a screen anyway, it's better for your eyesight to adjust your focus regularly and it helps to stop stress taking hold/becoming overwhelming. In my spare time I perform in amateur theatre productions, sing in a choir (proven to aid mental health) and take dance classes all of which ensure I zone out of work stresses although they do bring their own stresses sometimes! The theatre and choir side is also quite sociable so that helps too!