I am 18 years old and i have a very rapid heart rate and i know that it it anxiety. should i be concerned and go see someone?

Yes: You also might try cutting out caffeinated beverages, and getting regular exercise.

Structured CBT: Look for a psychologist who provides structured cbt or cognitive behavioral therapy. This approach teaches you how to better understand and control your anxiety. It is so much teaching, I have my patients audiotape the sessions and take notes when they listen to the sessions again at home. Homework assignments are critical for the development of emotional control skills.