If I am having one those days at work, a part of me would wants to not interact with colleagues or customers but I know that I can't do that. A few times I've signed in and not said much to some of my colleagues and then walk down to the back of the shop where there are less people around and do some tidying up even when there are other tasks to do. It sounds like I'm avoiding things but I know I can't avoid things at work, I know I have to do them whether or not I want to do it or not.