We all have to deal with unpleasant people. That's life, but sometimes law firms can become warrens. It happens when you have people who work there for years and aren't accountable. As a result, they overestimate their own worth, and they cost the firm money. That's because they are generally lazy and sick all the time. Why is this? Because they are unhappy mentally and physically.
Surround yourself with positive people who work hard and who have goals. Stay away from negative shrews (and nasty crows if male), who play gotcha (whether they be lawyers, paralegals or other support staff. Fortunately I deal with none of these issues now.