All praise is due to Allah. We praise Him, seek His aid and ask for His forgiveness. We seek Allah's refuge from the evils of ourselves and from the evil of our actions. Whomsoever Allah guides none can lead astray, and whomsoever Allah leads astray none can guide. I testify that none has the right to be worshiped but Allah alone, having no partners, and I testify that Muhammad is His slave and Messenger.
The Qur'an is the complete healing for all mental, spiritual and physical diseases, all diseases of this world and the hereafter. However, not everyone is guided to use it for the purpose of healing. If the sick person uses the Qur'an for healing in the proper way, and applies it to his disease with sincerity, faith, complete acceptance and firm conviction, fulfilling all its conditions, then no disease can resist it.
"O mankind! There has come to you a good advice from your Lord (ie the Qur'an, enjoining all that is good and forbidding all that is evil), and a healing for that which is in your hearts." (Surah Yunus 10:57)
Allah says again,
"And we send down of the Qur'an that which is a healing and a mercy to those who believe."
The Qur'an contains the treatment for hearts and souls, and as such it is a means of expelling all sicknesses from the body. In this regard, the Qur'an is a healing and remedy for many diseases including grief, sorrows, stress, anxiety, depression etc insyaAllah. Hence, let's stay close to Qur'an; always read, learn it and reflect upon what we read.