Here's a tip I just thought of, that I wish I'd had ages ago. Might not be needful for people more inherently organized, but consider: Any time you get/leave a job (or even when you send off a resume, if it's not via e-mail), send yourself a specifically keyworded e-mail with exact dates of when things happened.

Not only will this help update a resume, but more importantly it will make it easier to fill out government forms.

Pick a good word for the e-mail subject, one not likely to be used by spam and such, but iwlll be easy to remember later - like maybe "timeline" or "chronology"?

in MS Outlook, I can change the subject title of anything in my mailboxes... and often do! People who title their emails "A Question" should be shot.