Ibraheem 'Alayhis Salaam beautifully said (in aayah 26:80)
وَإِذَا مَرِضْتُ فَهُوَ يَشْفِينِ
And when I am ill, it is He Who cures me
No matter if it is herbal medicine or modern medicine, a psychiatrist or an 'aamil, no one will be able to cure you unless it is the will of Allah Ta'aala. Of course that does not mean that one does not seek a means to cure oneself. This is a world of means, and actions must be taken for consequences.
However always the conviction must be in the heart that the one who cures is not Doctor saheb nor Hakeem saheb nor any saheb.
The heart must have full conviction that cure is from Allah Ta'aala alone.