Exposure therapy is a common treatment for social anxiety. It helps relieve social anxiety by encouraging you to face your fears and reduce your fearful or anxious reaction to them. You start with things that make you feel just a little anxious, and work up to sources of high anxiety. You may feel comfortable trying this on your own, but if not, you can seek out a therapist to help you with this treatment.  Experts have several theories on why exposure treatment works, but most agree that it weakens your "conditioned response" to the things that make you anxious. In other words, it retrains your brain to react differently to those things.  If your anxiety is severe enough to cause panic attacks or intense fear, you should consider seeking professional treatment first. While exposure therapy is highly successful, it can make fears and anxieties worse if not done correctly. The activities should cause varying levels of anxiety. This means that you will want to balance some activities that cause mild stress with other activities that cause more significant levels of anxiety. This list will help you identify which type of activities make you feel most anxious and help you prioritize which activities you'll want to reduce your anxiety. Identify which activity is the least anxiety-provoking for you and mark it as one. Continue to number each activity in increasing severity. You can determine how anxiety-provoking each activity is to you by rating them on a 100 point scale. Ask yourself, “On a scale of 1-100, how much anxiety does this activity cause me?” The activities that are higher on the scale will be higher on the list. Use your imagination to pretend that you are fully engaged in the activity. Visualize each step in the process.  For example, if you’ve been invited to a party where you think you will embarrass yourself, this might be a great activity to rehearse.  You could start by visualizing that you are arriving to the location. Next you can visualize walking up the driveway and knocking on the door....

TL;DR in Vietnamese:
Xác định liệu bạn có cảm thấy an toàn khi tự mình thử nghiệm liệu pháp tiếp xúc không. Liệt kê một danh sách mười hoạt động khiến bạn cảm thấy lo âu. Xếp hạng các hoạt động gây lo âu từ mức thấp nhất đến mức cao nhất. Diễn tập trong đầu với hoạt động gây lo âu ở mức thấp nhất. Thực sự tham gia vào hoạt động. Lặp lại tiến trình.