From the doctors POV.
As I sat there on the bench in the middle of New York. The afterword in my handed dropped to the ground. I went back to the TARDIS leaving it on the floor. As I got back River was there and she said that she must go back to Stormcage.
"You don't have to go!" I said
"I'm afraid I do."
She left which made me remember about everyone. Rose was in a parallel world, Martha left, Donna had to forget and Amy and Rory died. And River died as well. I always knew she would die. I could never let her go to that library. I realized that I couldn't take it anymore. I had to stop.
Later that day I flew the TARDIS to a cloud on top of Victorian London. I realized that there was no point of travelling anymore. I had to stop and retire. My days were over.