Mayb try askin yourself wat the other person did to make you so
angry?
N if u know e true reason oredi...if it upsets u a great deal n
unjust to u, CONFRONT e person, and ask y he/she does this or
that.
Can b awkward but better than suppressing it n do damage to urself,
or worse flare it on others?
I tried b4 to a sum1 whom had treated mi with disrespect, n becos
of my confrontation with tis "popular figure" in e restaurant I was
workin in, I LOST e job...but I had a clearer picture of tis
person's character after e confrontation (his/her reaction to ur
words), and kinda decided its totally UNWORTHY of my time to
continue work there, so I left...found anor better job..
End of day, depends alot on urself...R u willing to fight back / at
least make ur grievances known to tis person whom has treated u
UNFAIRLY?
If he/she doesnt acknowledge ur existence...its ok cos its their
problem NOT YOURS..u wil find ur own clique of frens who wil treat
u with respect..continue looking, and u will find them 
Stay strong. Cheers.