DON’T leave without a firm position in place
Have you ever heard the saying “don’t cut your nose off to spite your face?” No matter how difficult it is to go to work each day (or work with that annoying person), do not up and quit without another job already in place. Now you certainly don’t have to abide by this if you happen to have at least three months (six is ideal) of savings you can rely on in the event finding a new job becomes a challenge. As many people probably do not, it’s best you just stick it out until there is a firm position in place. Not an interview that went well or a potential job, but an actual offer.
Note: If you are planning to quit your job with hopes of living off unemployment until you find a job, don’t rely on the government to bail you out. Does this mean if you voluntarily part ways with a job, you don’t qualify? Not exactly, but there is too much uncertainty to rely on this as an option.