To quit something implies a sharp ending. Quitting can either be positive, as in the case of quitting smoking to improve your health. Or it can be negative as in quitting a project when it starts to get tough. Look at the other circumstances in the dream to better understand how to interpret this symbol. Look for aspects of your waking life that are not necessarily obvious. For example, dreaming of quitting a job could indicate a desire to end (quit) a relationship. Do not necessarily take the symbols at literal level, but look for other areas in which an ending needs to take place.