To the body, images created in the mind can be almost as real as actual events. This gentle yet powerful tool focuses and directs the imagination, involving the body, the emotions, and all the senses. In many instances, even 10 minutes of imagery can make a difference. This practice can be especially useful pre-surgery as it can help to reduce anxiety and create a vision of life post-surgery. Guided Imagery may be incorporated to lessen headaches, pain, and symptoms of cancer treatment. It has been shown, again and again, to reduce the adverse effects of chemotherapy, especially nausea, depression, and fatigue.