Feeling anxious mainly means mental tension, uneasiness, worry, fear, and a feeling of constant mental unrest and no way to be quiet. Psychoanalytic theory believes that anxiety mainly points to the future, that is, a sense of uncertainty and insecurity about the future, so it becomes particularly tense and worried. Special anxiety may be accompanied by physical symptoms, such as headache, dizziness, nausea, vomiting, chest tightness, breath-holding, or a sense of near-death. In severe cases, there may be behavioral manifestations, such as tense expressions or repeated hand picking or rubbing, fidgeting, walking around, or even yelling. If you feel anxious, you must actively regulate it, such as appropriate distraction.