Hey Sometimes Psychotic: I can understand being upset about someone not doing their job properly
I have a doctor who put my mother on an insulin needle and she didn't need one
yet now she is screwed and has to use it. That infuriated me really. Meditation is great!
I like to meditate sometimes. But it's hard to find the time to do it and the proper amount of Silence.
have you tried yoga? sometimes yoga can help you feel calmer I prefer to do Yoga when I feel tense then I meditate.
Oh here's a good meditation that you should try!Start by taking about 3 or 6 deep breaths and hold them
for a count of 3 or 6 (depending on how many you want to take) then release them out slowly.Then picture
yourself light as a feather drifting all the way to the ground,when you feel isolated from the outside world and
like you're in a large room then you need to Foucs And picture a golden light,like the sun warm and bright enveloping your entire being,then picture the darkness or negativity departing from your mind and aura. Then embrace the light energy and draw it into yourself.

That is a aura cleansing meditation. those really help in clearing your mind and clearing away stress or anger.

(Sources: I am a spiritualist) Oh and to bring yourself out of this medium mediation just wiggle
your fingers and toes (Always works for me)