system
A chat on subreddit /r/wallstreetbets
human
Stupidity.  I was daytrading CGC. Some news came out that Altria might want to invest in another company. All weedstocks went apeshit for a short period of time.  I had been scalping all morning.  I had a short position and was in the middle of getting out of it and going long when the news hit.  In a matter of minutes I was underwater by $10k. I panicked and covered my short position. Had I held for 30 more minutes, I would have been back in the money.  I learned a lot about myself that day.

gpt
This just happened to me on DIA puts Friday. Fuck it felt bad