Do I have social anxiety? If so, what could I do to get help?

ok i am 14 year old guy and i have real bad GAD general anxiety disorder , i get server anxiety attacks if im n crowded areas and get neverous round people especialy girls ( i never used too ) but im getting refered to a cbt specialist cbt- cognitive behavioral therapy, ive looked at vids on youtube and it is amazing by the looks/sound of it but i also like to imagine my mine is a jar and my negative thoughts are cotton balls and i squish them in there down as far as they will go then close the lid...