How did the narrator adjust to the ways of life first in London and then in Cambridge, U.S.A.?

The narrator has seen various shifts in his life. Firstly, during his bachelorhood, he adjusted a great deal surviving under very absurd and unfavourable conditions. He started working in a library to meet his expenses while he was attending lectures at the LSE. He adjusted his accommodation with other people like him, sharing food, toilet, etc. He led a reckless life eating with hands, soaking dirty dishes in the tub, lounging barefoot, doing things only expected from aimless and lethargic people. Next came a phase in his life when he got married and found a permanent job in America. He shifted because he was given a full-time job in the processing department of the library at MIT. This, however, did not mean that he had started living lavishly. His budget remained just the same it was when he was a student. The aspect that changed drastically was the pace of life in America. Every person was in a hurry to get to the top. Even in his new accommodation, he adjusted to various noises such as flashing sirens, fleet of buses rumbling along all night, distracting and suffocating him. Life wasn't as peaceful and calm as he had expected with no “glittering ocean to thrill” him or no “breeze to cool” his face. His change in schedule can be reflected at various incidents such as buying milk, etc. His life at the YMCA building turned to be stifling and intolerable with the inconvenient living conditions and unbearable noise because of which he had disturbed sleep.