IMO it is time for people to start assuming responsibility for their own healing and the numerous psychological / brain-state-altering techniques like meditation are a perfect example.
If anything, the "placebo" sugar pills don't work by themselves; the patients feel better due to feeling calmer that their ailment is being addressed. That by itself proves that the brain has the power to cure a lot of conditions.
I personally have found ways to self-cure with deep relaxation. I have well-repressed and usually well-controlled anxiety to this day. I am usually hyper-active and if I feel a bunch of free joules of energy in my body, I usually quickly expend them; pretty bad habit but I am working on it still. Meditation helps, A LOT. It calms your mind, reduces your CPU frequency -- so to speak -- and by this mechanism, or any other (not sure which one triggers the result) your brain manages to separate the wheat from the chaff and focus on what's really important right now.
A bit off-tangent for sure. My point was that self-healing through altering the brain's state -- be it with meditation, psilocybin, or browsing your comic book collection from when you were a kid -- absolutely works. It serves as seeing the big picture periodically, roughly speaking.