>I can't find the info but there was someone in the tech industry who accidentally overdosed and suffered a two year bout of severe debilitating depression culminating in suicide.

i believe you are referring to Felix Hill.

https://docs.google.com/document/d/1-jBoSEVlryiX1IaSzV4vKuih...

"On mental health, psychedelics and life

This is a story about mental health, psychedelics, psychology and the mind. It is a story about the joy of family, the joy of friends, the joy of being in love, and the joy of doing scientific research. It is a story about life, the world, and how amazing they both are.

After 18 months of intolerable torture, and after many months of consideration I have decided to end my life."