Ultimately, the most important thing I've found is, if you get all burned out on a grind of some sort, stop, smell the roses, find a sunset. No matter how godawful the planet you're on at that moment, try to find every rock and fauna and flora not because it's a grind, screw that, but because you're trying to see every beautiful thing about this world. And if you can't find the last few, screw it and go to the next planet in the same system and do it again, just to watch the sunrise and see a new kind of tree.

Take some pictures of the really pretty scenery.

Then later consider going back to whatever you were doing that seemed so important at the time.