One of my former coworkers said something like the following yesterday: "Changing all of my contacts from 'co-worker' to 'former co-worker' is a drag." He's right, but that's just the beginning.
There are so many little things that need revision when you change jobs. In my case it extends to odd things. I had all kinds of bookmarks in my web browser for work related sites. Those can go. I moved my websites from my employer to another hosting provider, which means all kinds of things change.
My morning rituals change too. Until Friday morning I got up and logged in to work to see if anything needed my attention immediately. Then I went off and got ready for work. It's very different now, of course.
None of these things is a big deal all by itself, but they add up to something that I can imagine being depressing. I'll be fine. I wanted out, in fact, but my exit was actually involuntary. (About 1/3rd of a very small staff that had already seen significant reductions in size through attrition was let go. The implications of that are ugly for those left behind.) Still, the fact that I was let go, rather than choosing to leave on my own, gives some things an odd twist.
In any case, Now when I sit down in front of the computer my tasking is very different. In a week or two it will all feel natural again, I'm sure, but it's still a bit off.