Đừng giữ bí mật. Tìm kiếm sự hỗ trợ y tế dành cho người tự gây tổn thương. Giúp bạn bè tìm được sự giúp đỡ về mặt tâm lý. Trở thành nguồn hỗ trợ. Hỗ trợ người mà bạn yêu thương dùng thuốc. Đồng thời hãy chăm sóc bản thân.

Given the above summary, write a detailed text in English for it.
Particularly if you and the self-injurer are both teenagers, you should encourage your friend to talk to his parents, a teacher, a school counsellor, or another trusted adult about their self-injury. Tell them that you will go with them if they are afraid to go by themselves.  Do not promise to keep this a secret. Keeping quiet enables your friend and gives him permission to keep injuring themselves.  Tell someone trustworthy yourself if necessary. Be honest with your friend and tell them whom you will be telling. Choose wisely and tell someone who will maintain confidentiality and act in a professional manner to get your friend the help they need.  Prepare for anger. Your friend might be ashamed or embarrassed and not want anyone to know. Let your friend know you care about them. You might be afraid of betraying your friend’s confidence and losing a friend, but your friend needs professional help and their health and safety is the most important factor. Most friends will understand your decision in time.  Do not give in to threats of further self-harm. Your friend may be angry and threaten to hurt themselves further if you say you want to tell someone about their behaviour. Remember that you are not to blame and the only person that has control over their injuries is the self-injurer themselves. While there is no specific diagnostic test for self-injury, you can encourage your friend to see a physician or mental health practitioner who can evaluate, diagnose, and create a treatment plan. Hospitalization may be required for severe, short-term crises. Some self-inflicted wounds may require medical treatment.  Extensive scarring may be able to be covered or reduced with cosmetic surgery. Counselling, or psychotherapy, can help your friend identify and manage underlying issues resulting in self-injuring behaviours. There are several types of therapy that can be helpful, such as:   Cognitive behavioural therapy. This helps identify negative beliefs and behaviours, and replace them with healthy, positive coping...