I've been clinically diagnosed with depression and other fun stuff for nearly two decades now. Exercise is great as a stimulant to your emotional fortitude but it hasn't "fixed" shit for me like they said it would. "Here's a bottle of 60mg pills, give it a month to feel better". If I had a plank of wood every time I heard that after trying their holistic idea, I'd have built my own house to get away from this fucking dismal housing market.
However, I think our problems paint the picture for us: Mental health issues are treated more like chronic staph infections than the psychological trauma they are. Everyone's damage is so acutely unique to them, because it happened to them, so treatments need to be equally as personal. I don't have the source on me, so take my statement how you wish, but nearly half of all diagnosed Depressives are given drug-only treatments.
The solution is to expand therapeutic services to help more people (i.e. government programs to subsidize the cost of services to the psych practice) and only use medications as a short-term supplement during treatment. This would help those afflicted to reach the point they can do the more holistic approaches and wean off the drugs.
Then again, that doesn't get the pharmaceutical corporations paid... ¯\_(ツ)_/¯
On a more personal note, we also need better therapists. The ones I have must've had some shit they're dealing with of their own because my sessions were typically abysmal and fruitless. Maybe if I had someone who cared a titch more my brain wouldn't hate me so much. It's probably just another pay-to-win scheme; I'm poor so I'm doomed to shitty service. Idk. I just work here, man.