Although I can’t make an official diagnoses on the basis of a letter, I can tell you that what you are reporting is consistent with the diagnosis of social anxiety. Although almost all teens go through a period of being overly concerned about how other people see them, when it becomes this regular and this intense, you may need some help to work it through.
It would probably be very helpful for you to see a therapist for a little while to get some coaching and encouragement. I think you already know that. You know you haven’t been able to take care of it on your own. That’s why you wrote to us here at PsychCentral. But we can’t offer you the ongoing support that a local therapist can give you. Please, do make an appointment to see someone who specializes in teen issues. You deserve to reclaim your self-confidence and self-assurance when with other people.
I wish you well.