Welcome to the club Outlaw.
You will spend the rest of your working days floating along, knowing it's coming to an end. Every time you remember that you have pulled the pin, a smile will come to your face and you will immediately get a nice endorphin rush that soon you won't have to put up with any more of their sh!t.... however please be prepared that they will try to give you the death of a thousand paper cuts on your way out by way of the frustrating errands they so love to send one on.
They shafted me right up until the aircraft door closed, I actually cried when the wheels went up. Not because I was going to miss my friends, but because I was finally FREEEEEEEEEEEEEE
And yes it was very bizarre to be congratulated on my last flight for the fact that I was leaving! It's the standard reaction these days "I'm jealous"
best of luck for what comes next!