idk if anyone will read this but let me know your thoughts

i’m in this cycle of toxicity where something minor will explode in my brain and i’ll become so negative and anxious and think the worst case scenario and then i upset someone they get upset at me after a while i realise what ive done i cry and get upset and it just goes on and i don’t know what to do i don’t know what’s wrong with me i feel so trapped inside my head