My first summer job, it was lonely for the first 2 weeks, but after that, I settled in and it was fine. That was the general pattern for summer jobs.
Permanent job, never any trouble getting into it. I was fortunate to work at a good company, and besides, I was doing what I was born to do. At times, my job was so good, when on vacation, I'd be counting the days to when I got to go back to work.