How do I approach this situation? I get on well with my supervisor and other people in my lab. However, my postdoc, who I work very closely with, and I just don't get on. We have admitted there is a personality clash and tried to sort it. However, after a while things got worse again. I have tried to talk to my supervisor but he just says 'that is how she is'. I like my project and would rather not quit, but it is getting to the point that I might.