All of my jobs have lasted a number of years except for one, there was one job I did which lasted for just 1 week. I started that job and not a single person spoke to me in the whole first week, even colleagues who were within 10ft of me for the entire week didnt speak to me, at breaks and lunches they all got together but nobody spoke to me on the breaks or lunches or walked over to me etc. Its the only job I've had in my life where I have experienced that, it literally felt like I wasnt wanted there by the other staff, either way it made me feel uncomfortable and at the end of the week I left.