Amateur – The first scene in this script can be adapted for those who do not have children, or can be used as a leverage technique if their child has already copied the bad habit. The hypnotherapist could point out that when the child gets sick, he/she may do so because of the germs under his/her fingernails, therefore indirectly applying guilt to the nail biting parent. For extra power, you can add that when the client puts their fingers in their mouth in the future, they will feel as if they want to vomit, as if they have stuffed all of their fingers in their mouth, causing them to reach and gag.
Nail Biting Script
Building Better People