Tired and frightened

These long hours are starting to take its toll on me, it's hard when your job is supposed to be part time then it jumps to full time for a whole month without you being asked if you mind. And this morning when I was practically assaulted by a customer it made me question if this is really what I want to do. Which is a real shame because I really do like my job normally. I went off the shop floor pulled myself together and then went back to work but we really need security at work.