If I walk into a shift in a good mood, smiling and just ready to go, then I tend to have a great night. Things seem to run a lot more smoothly and it just goes well. Even if it's slow I can have a good time and enjoy work.
However, if I walk into work tired, and not caring then I'm gunna have a bad night. If I have a negative attitude when I start the shift then I just get frustrated with the shift and every little thing that seems to go wrong.
I guess I really need to work on walking in with a positive attitude because it really does change the shift.