I may be talking out my butt but I'm gonna suggest a couple of things. Try taking that person you wanted to slap silly, the circumstances and type it all out. Just let all your feelings about that incident come out through your fingers as you pound on your keyboard. Don't bother with spelling or grammar, just go for it. I found that I could expend that anger by the time I was done typing it all out, but if I hadn't and still felt "murderous," I'd go outside and stomp up and down the driveway until I tired myself out.
No one knows you better than yourself, so you decide if this is something you can do. If you want, you can call me after you try it, sort of as a check in... or not. Whatever you prefer.
{{{{{{{{{{{{{{{{{{{{{{{{{Mary Alice}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
<font color=blue>"Our doubts are traitors and make us lose the good we oft might win by fearing to attempt" --Shakespeare</font color=blue>
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Psalm 119:105 Thy word is a lamp unto my feet, and a light unto my path.