It's true mental illness need not always stem from external factors but most of the time the conditions/socio economic political factors aggravate if there is an underlying issue...
Let me try to share my personal experience..
...I have been battling anxiety/depression/suicidal thoughts since years..already had anxiety issues right from my childhood but.my depression stemmed from constant bullying in school coz people found mee too much arrogant (which was my anxiety actually)bookish/philosophical(my luck I was stuck in a school of shallow people.. Learnt how to deal with it later when I found like minded people with whom. I could connect with ..) ..
So yes, when I read all those stories about SSR ..it actually triggered my depression which I had controlled since an year..so...I can truly empathize what he must be battling..And since he was a public figure just imagine the mental trauma he might have been through....
It's not simple..not always linear..And if u are highly sensitive and an over thinker it can be a nightmare...
I believe he was too sensitive... Too caring... A true dreamer caught in the wrong world..
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