It is possible to cure an illness from a distance provided it is not supported by the will of the person.
Human nature cannot be changed this way. It is too deeply ingrained into the system and its threads are linked to our past. It is only the Divine Grace that can change it if the individual himself aspires sincerely and persistently.
What one can do is to pray to the Divine for the Grace but then the person must be open to its action. That is where the main difficulty lies. Something in the individual holds on to their character, they do not want to change and hence, the change becomes difficult by any means. It is only when some painful experience comes and one sincerely wishes to change that the force and will can be directed towards him by someone who is not only open but also in some degree in contact with the Divine. Otherwise it is a wasted effort.
Affectionately,
Alok Da
