It's not too late to develop new friendships or reconnect with people.
After you have wept and grieved for your physical losses, cherish the functions and the life you have left.
What tipped the scales was that psychology involved working with rats.
Do I wither up and disappear, or do I make the best of my time left?
Well, the truth is, if you really listen to that bird on your shoulder, if you accept that you can die at any time–then you might not be as ambitious as you are.
The best way to deal with that is to live in a fully conscious, compassionate, loving way. Don't wait until you're on your deathbed to recognize that this is the only way to live.