I get that feeling as well, but it's fleeting. Never lasts all day. Here's what I do - when you feel that rush of anger.agitation.irritability flow up inside of you, imagine it coming right up through your face and head (your head and face and neck will likely get hot and red/blotchy) and then HOLD IT in there. in other words, keep it socked away where no one else can see it/feel it/experience it - only you. Hold it in and feel your hear racing, beating out of your chest and feel that lump in your throat growing bigger. Sometimes you will be fighting it back so much, your bottom lip may start to quiver. (this is not for the weak mindedm btw). keep letting it fester inside of you like that until you dont feel it anymore.
VIOLA!