Kathleen sends along a video on tapping and getting clear of persistent issues. Aside from its value on that topic, Louise Hays gives a very good description of a typical vasana. A vasana is a reaction pattern we created as the result of earlier traumatic incidents, like Louise’s.
In her case, her stepfather used to hold her head under water and now she gets spasmodic neck pains. Louise describes the complications and patterns that arose for her, some of which involved punishing herself as a continuation of the pattern of punishment she was subjected to as a child. Louise describes her vasana between 8:35 and 10:33 of the video.