The cure to depression is a) calm the mind via the breath and once that is complete, usually after days of effort, and b) to observe your physical sensations from moment to moment without reacting to them in order to see Reality as it is.
I actually really think there's something in mindful meditation, but flatly stating it as the be-all and end-all solution is more than a bit patronising, belies the endless effort required to make it work, and comes across as somewhat arrogant, which is probably why you've been downvoted into oblivion here!