So if I need to remember soemthing, I'll put it on a sticky note and just stick them around the house. I'm trying to get out of that habit, though. It looks weird with a lot of sticky notes everywhere. XD
I dont do it either. But when I have to remember flowcharts and drug classification and all those bilge, I have no other way but to stick it near to my bed and go through all those either before I sleep or after I wake up. Its difficult though.
No I don't really write down notes, although sometimes if I have many things going on at once, I'll make a to-do list to help keep track of everything that I need to do... But even that is pretty rare.