Now it was my mother's turn to sigh.o
"Look," I said, to cheer her up. "I'm thinking about shaving the moustache off." Even though I wasn't for a long time. Another discovery: You can build a way of life on postponement.
"Your grandmother probably won't even recognize you," she said. And I saw the shadow fall across her face.
In 1-2 sentences, explain the meaning of postponement in the excerpt, and tell which words provide the clearest context clue for the word.