As soon as my publication date came and went, I realized it was just a date. The project actually continues, even though the writing, production, and editing ended. People are asking questions about it, interpreting it, and arguing about parts of it. So, the book just kind of 'lives' out there without me.
At first I thought, sic transit gloriam. Now I realize that if a bus hit me tomorrow, "Vlad the Impaler" might go on living, albeit in a small community of insane people distributed worldwide. This is a very strange feeling - like giving birth to an adult who already doesn't live at home, and doesn't write.
I'm already getting ready for the next book - researching medieval Central Asia. This one will be fiction.