The manas has tremendous energy

The characteristic of the manas is that at all times it engages in activities unknown to the mind consciousness and refuses to remain idle. What it does is chiefly all for the sake of "self," safeguarding all of its own interests. It always finds ways to satisfy its own needs and to solve the most pressing problems. It possesses great energy and can realize its own goals and achieve its own aims, because behind it there is the tathāgatagarbha, which satisfies it as much as possible. Therefore, one must make the manas believe that one's body will definitely become healthy; once the manas believes this, it will find ways to make itself healthy. Whether the body has a deficiency illness or a substantial illness, He will find ways to resolve it and resist stubbornly. If the manas is unwilling to remain afflicted by a deficiency illness, it will put up a desperate fight; when karmic obstructions partially recede and merit strengthens, the beings of the realm of shadows will withdraw. If it is a substantial illness and the manas wants health, the tathāgatagarbha will exercise its nature of the great elements, transmitting harmonized seeds of the four great elements so that the physical body gradually recovers—this is what the secular world calls the body's own self-healing power. The manas will also seek out various opportunities behind the scenes to change the body's condition. Thus the physical body will have many chances to regain health. The key is to make the manas confident that it can become healthy, that it has no illness, and that everything will get better; then the manas will strive in that direction and ultimately solve the problem. Suggesting to the manas and encouraging the manas is precisely blessing oneself. In the end, it is all the blessing of the self-nature Buddha: one delivers oneself, and one saves oneself.

An opposite example is when a patient knows his illness is serious and displays fear and restless anxiety—this is precisely the result of the manas having believed the doctor's words. Because the manas is afraid, the body and mind change according to the manas's thoughts; when the manas relaxes, the physical body also changes along with the manas. That is, the information the mind consciousness obtained from the doctor is processed and transmitted to the manas; the manas believes it and forms thoughts and intentions, and the eighth consciousness complies with the manas, manifesting either the healthy or the wretched condition of the physical body. If someone curses another person, then the curser's manas emits a kind of energy; the manas should have thoughts and wishes, and his own tathāgatagarbha cooperates with the manas, causing the cursed person to fulfill the curse's wish.