The last couple months I've started keeping a journal relating to my software development. I've found that's it's been helpful for keeping track of software requests and the changes and discoveries necessary in fixing an issue or keeping track of system infrastructure changes. I've also found that it's a nice way to slow down for a moment and bookmark my thoughts in a day where there's always something that preempts what I'm doing.
I use a Moleskine journal since it's an escape from the keyboard and it forces me to slow down and write legibly.
I'd like to do something with Evernote but I haven't discovered the best way for me to sync with it.
What do you use?