It seems you're not angry for no reason as you provide a reason with each situation you mentioned. I'm really sorry
Have you considered therapy? That could help with anxiety and with these things you're angry about.
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“All the darkness in the world cannot extinguish the light of a single candle.” -St. Francis of Assisi
Diagnosis:
Schizoaffective disorder Bipolar type
PTSD
Social Anxiety Disorder
Anorexia Binge/Purge type