How can I get over anxiety & insecurity?

Recently I have been feeling panicky while I am driving or riding in a car, to the point where my heart races and I start twirling my hair continuously. Also, while at work, I will get the feeling that my heart is flying away, and I get flushed in the face. I do not hyperventilate like most people when having panic attacks. I also am insecure of the way I look some days. I think this is a normal girl thing, but I have had to delete people from my facebook friends list because I was looking at their pics and felt so insecure and jealous of the way they looked and wished I Looked the same. This caused a lot of the heart racing thing and feeling of hopelessness. Please help- I do not want to be on medication...