I can't find a cite for this right now, but I've heard this phrased as "park facing downhill." Towards the end of the day, I actively try to get myself into a position where I've put together the beginning of an idea and gotten some failing test cases written, or at least some non-compiling pseudocode into a buffer somewhere. This sets me up for success at the beginning of the next day -- I work right into a state of flow while tying together the loose ends from the day before.