Interesting that you mention coffee as something that is helpful against depression. While I haven't been "diagnosed" with depression, I reject these DSM labels, I do experience very low/depressive moods, usually after very poor sleep. On those days, coffee puts me right into a downward spiral, that's specifically how I know it's going to be a tough day. Not smart enough to stop drinking it though. Daily exercise in the form of running/walking and a strength/stretch/balance routine with some yoga pilates moves thrown in is as essential to my well being as water. Projects where I'm using my hands - drawing, painting, quilting, gardening, making - are anti depressants unto themselves, results/progress is tangible. I'm choosing the non medication route, I don't trust any of it, and have decided on talk therapy, only 2 months in, progress is slow, don't know if it will ultimately help, but I've been burned by (benzo) meds, so am super reluctant to fill any more pharma pockets at the expense of brain health. It's a complex issue, I may have to change my tune if current course doesn't help.
Best