I don't know what to do

I have a job. On my job I am very busy. In order to get all of my work done before I leave I can't do office talk. I have to keep my nose to the grindstone. I have to concentrate because of the multi tasking that I do. The problem that I am having is that it is exhausting. I have to cut people off (nicely) which I am trying to do whether its on the phone or at my window. There is no break until lunch. Then it is a race in the afternoon to get everthing wrapped up so that I leave ontime. The most frustrating part is that everyone is chatting behind me. Sometimes they look stuff up online. Sometimes they have small talk, I know I can't join in because I will pay for it later in the day. Now I have to listen enough so that I don't miss something I need to know, but I really don't want to listen to all their BS when my nose is to the grindstone, frankly it pisses me off. I find myself singing " should I stay or should I go now" remember that song? I am going to give it some time before I decide. I am actually hoping something else opens up at a different office, so I might be willing to stick it out. Or I might need to look for another job (yuck) I am a social person, so I do have to work at not joining in on conversations. I sometimes throw in a one liner, but I really don't think they care anyway. One good thing, I don't have to buy Christmas presents for people I hardly talk to.