I went ahead and told my boss and colleagues today that I'll be gone in 8 months. I didn't really plan to do it. I was thinking I'd probably wait a couple weeks to make sure I was really certain, but I knew it was the right thing to do, and there was no real point to waiting. My boss and colleagues have been good to me, so I didn't see any need to withhold the info from them.
I explained why I was leaving. My boss asked me to consider staying on as a consultant. He said I didn't have to answer now, and I didn't, because my instinct was to say No but I didn't want to be rude or to shut things down without knowing the details. But I doubt I'll say yes.
I'm feeling tired and a little sad. It was a long day, with lots of long and sometimes difficult conversations. I'm going to miss some of the people there. It feels a little bit like a breakup of a relationship, which may sound odd, but it is like that in some ways -- a lot of small and medium-sized relationships, all ending at once. They will be losing one person (me), but I'll be losing all of them. I've always been an introvert, and I never developed much of a social life outside of work, so I'm feeling a sort of anticipatory loneliness, if that makes sense. I remind myself that one of the reasons I want to retire is so I can develop more of a social life outside of work. It was hard for me to do that while I was working.
It was weird the way it came out. I hadn't planned on telling anyone, certainly not my boss, but then I found myself telling everyone, including my boss. I guess it just felt like the right thing to do.