Biting one's nails is a common nervous habit that many people struggle to break. Luckily, there are several antonyms that can help individuals overcome this habit. One effective approach is to actively replace the behavior with a healthier one, such as deep breathing or mindfulness exercises. Another antonym is to consciously avoid situations or triggers that lead to nail-biting. In addition, keeping one's hands busy with fidget toys or stress balls is another way to redirect nervous energy. Finally, seeking professional help such as therapy or counseling can also provide valuable support in breaking this habit. Ultimately, it's important to find the right antonym that works for you and create a plan for success.