Allah (SWT) says in the Holy Quran: “We send down (stage by stage) in the Qur’an that which is a healing and a mercy to those who believe: to the unjust it causes nothing but loss after loss.” (17:82).
In the previous Ayah, Allah (SWT) teaches us that one of the great benefits of reading the Qur’an is receiving His mercy and healing our souls from sins and spiritual diseases. Also, Prophet Muhammad (PBUH) mentions that some Surahs are meant to be read for these aims. One of them is Surah Yaseen (chapter: 36).