Keep getting out of the house and if you can physically exert yourself like you did as a kid, where you'd be too tired to eat. That makes me feel good. Also Chip18 has good advice, just get a check up, blood panels etc, just like you'd treat your dog if he was not acting right. You might want to investigate something like gluten intolerance. I sent a stool sample to a place called enterolabs (in TX) and found I did have gluten intolerance, and since I stopped gluten I feel better, no headaches or brain fog.
Just to be honest,I should disclose I am anti-SSRI's due to an extremely negative experience with them, and I always seek and advise for more holistic treatments. Cognitive behavioral therapy is also helpful.