Building on what we just talked about, let's think of as many ways as possible to sprinkle some novelty into our days — in ways that won't mess up the systems that make us efficient and productive.
This exercise can be done quickly. Try setting a timer for just five minutes and fill a notebook page with as many ideas as possible before the timer runs out.
It might help to identify "typical" aspects of the workday — then look for ways to inject a different approach.
For instance, I typically check email as soon as I get to the office. To mix it up, I could deliberately chose to ignore my inbox until lunchtime and jump right into a big project. (This doesn't have to become a new routine — the whole point is simply to do more things differently, more often.)
Another way I like to mix things up is via lighting. (Phillips Hue bulbs are fantastic for changing the vibe of a space when needed.)
Again — five minutes to list as many ideas as possible.
Then, try some of the ideas out for real over the next week or two. It'll be fun.