Personality Development
The Healing Power of Positive Thinking
How positive emotions strengthen the body and support recovery, according to Jewish thought and modern science.
- Rabbi Zamir Cohen
- פורסם כ"א שבט התשע"ד |עודכן

#VALUE!
The power of thought manifests in our lives in several practical ways. One prominent method gaining traction today is known as guided imagery. Medical professionals have observed that even a person suffering from a terminal illness can extend their life through positive thinking. Optimism and joy have been shown to strengthen a person’s ability to survive.
Even though this is primarily a psychological process, it has clear physical effects. If someone repeatedly tells themselves, "I’m healing, my body’s cells are renewing," and truly believes it, there’s a good chance this mindset will actually promote physical healing. Of course, this isn’t a substitute for conventional medical treatment, but this way of thinking plays a crucial supportive role.
A relatively new field of scientific research known as psychoneuroimmunology examines this mind-body connection and studies how a person’s mental and emotional state impacts the immune system. When someone is in a joyful and elevated mood, their immune system functions more effectively and invading bacteria are more easily destroyed.
Conversely, someone who is sad or depressed- while these are emotional states- experiences a decline in physical resilience. Their body produces fewer antibodies, and the immune system functions at a much lower level than that of a happy person.
These concepts aren’t new, they are found in the Book of Proverbs. King Solomon, known as the wisest of men, wrote in Proverbs 17:22: “A cheerful heart is good medicine, but a crushed spirit dries up the bones.”
The commentary Metzudat David explains:
“A cheerful heart is good medicine” – joy benefits the body, as the word "medicine" here refers to physical healing.
“A crushed spirit dries up the bones” – the inner vitality of a person is diminished when they’re weighed down by sorrow.
Another verse, Proverbs 18:14, says: “A man’s spirit can sustain his illness, but a broken spirit- who can bear it?”
Solomon teaches us that a person’s spirit gives strength and support in times of illness. But once that spirit is broken, it becomes a burden that’s almost impossible to lift. Emotional despair can be more destructive than the illness itself.
Our thoughts and emotions are not just private feelings, but they directly influence our physical well-being. Cultivating joy, optimism, and emotional strength isn’t just good for the soul; it’s powerful medicine for the body.