If you are optimistic, the body's suffering will naturally be alleviated

If you are optimistic,  the body's suffering will naturally be alleviated.
Xian'er says so: how to face despair.
Xian’er was sick and he could not get out of bed.
He was scared and asked Shifu:
Shifu, why is it that I am sick. And it has been a few days, why am I not better?
I saw Xianyi getting flowers. He is not preparing for my funeral, is he?
And Xiansan has been chanting the Rebirth in Pure Land Mantra.
Is he getting ready for the ritual of my salvation?
Shifu, I don’t want to die. I am still young!
Shifu, there are many flavors of ice-cream that I want to try.

And there are so much more…
Shifu told Xianyi to get Xian’er out of bed and get him to work in the kitchen.
Below are quoted from my Shifu’s new book, Say Good Things—Master Xuecheng’s insight on the path to speaking like a Buddha. 
When in agony, there are two different mindsets.
One is to become scared, worried, anxious, and focus only on the pain, therefore finding no way out.

The other is to plead for and earnestly seek help to get out of the situation.
Most people
are stressed out as stated in the first case.
The psychological distress is so overwhelming that it exceeds physical illness.
The body and mind are interconnected.
If the mind is optimistic, sufferings of the body will naturally be alleviated.

心若乐观、光明，身体的痛苦自会减轻
贤二如是说：怎么面对痛苦
贤二生病了，很苦，躺在床上起不来，
心里也很害怕，就问师父，
师父，我怎么会生病呢？
好几天了，也不见好，
我看贤一去买花了，是不是给我准备后事呢？
贤三最近老是念往生咒，是不是准备超度我呢？
师父，我不想死，我还小呢？
师父，我还有好几种口味的冰激凌
没有研究出来呢？还有......
师父对贤一说，
把贤二从床上揪起来，让他去做饭。
以下来自我师父的《好好说话》
遭受痛苦之时，
有两种心态：
一种是害怕、担忧、焦虑，聚焦于痛苦，
越想越觉得没有出路；
一种是因为不想受苦而恳切地寻求救护。
常人往往停留在前者之中，
心理的负担甚至超过了身体的疾病。
人的身心是互相影响的，
心若乐观、光明，
身体的痛苦也会减轻。