There are a couple very nasty coworkers that I have to deal with at my workplace.Each time something occurs,I try very hard to defend myself,but afterward I actually feel sick to my stomach and I shake badly.I end up leaving work early in order not to face these people and am considering quitting my job because of it.I would like to know how I can overcome this problem and stop being so afraid of people,because I realize that no matter where I go I will find someone who thinks they can be mean to me.