Sotto, You will have ups and downs for a while. I'm sorry that things are still up in the air a bit as to when the D will be finalized, but I think you are handling everything w/grace and dignity.
A new car? What better present to give yourself after a D! I purchased a set of diamond earrings when my D was completed. I hope that that the person coming by today will purchase your old car.
Please take care of yourself and you are correct, when you are tired and run down, everything gets to you.
BTW, it's time to start a new thread.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.