I have been in a terrible mood the last two days

I was so angry when I saw a former coworker while grocery shopping today I was severely tempted to punch them in the face. Granted they were a racist bitch who refused to do her own job but still. Then I left a review for another former employer calling them out for being a pos. Im so sick of this anger, it drains everything I have and leaves me with nothing. This whole cortisol thing is killing me and the one doctor who is taking patients in the area will not get back to me. Im exhausted simply from rage alone.