Step 1: It is at least 1am, I am reasonably tired.
Step 2: I figure I need to be productive at some point.
Step 3: Browse random websites until the end of time (probably 20m of nonsense)
Step 4: Suddenly I'm super motivated to actually get something done, slapping some music on and starting to work until I fall straight into bed.

Good days.
Seriously, the thing that motivates me the most is probably music.