I dont believe my depression is fed through negative thinking, its mercury for me.
On my good days im back to my old positive self, on bad days i get depressed and suicidal and ita caused by mercury.
I tried antidepressants, they made me 100 times more suicidal, i went to A&E, when they saw me they told me not to take another pillI have tried others, but none work for me, i have to put up with it and hope the feeling goes away.
St Johns Wort doesnt touch it, neither does 5HTP.