What you describe is a key method for hypnosis. The method can be used to help someone else over come stress. I was taught this method by a professor of psychology when my son was ill. My son was having difficulty receiving IV’s and would vomit at every session. I would ask my son to visualize a particular course where we rode dirt bikes. We both knew the nuances of the course so I could ask him to think about the jump coming up, or a rut that required a certain approach. The person doing the talking must use a low calm voice and allow the other person to see the vision. maintaining a constant flow like a story. We did this while my son was given the IV and it allowed him to ignore the process.