Many people unconsciously engage in repetitive body behaviors like nail-biting or skin-picking, often triggered by stress or boredom. These actions provide temporary relief by offering sensory feedback, especially for those with heightened sensory processing or attention challenges. Understanding these triggers and employing strategies like habit reversal therapy can help manage these ingrained habits.source https://timesofindia.indiatimes.com/life-style/health-fitness/de-stress/why-you-cant-stop-picking-your-skin-know-what-really-causes-it-and-how-you-can-break-the-cycle/articleshow/125819234.cms