Surprisingly, this. It's a boring, mindless thing to do for the first few hundred times, so you postpone it as far as possible. Of course, the big pile of dirty

Surprisingly, this. It's a boring, mindless thing to do for the first few hundred times, so you postpone it as far as possible. Of course, the big pile of dirty, possibly disgusting dishes makes it even harder to find the motivation to do it. After a while, it becomes a routine, and you just do it soon enough that the entire ordeal takes less than 10 minutes. And after even more time, you start enjoying it somewhat, exactly because it's boring and mindless, so it becomes almost meditative. The pleasant sense of achievement afterwards remains, though.