I dig at my fingers and chew on plastic straws alot, what would cause me to do this chronicly, l also do not like to be around crowds of people.?

Agitated anxiety: These symptoms sound both uncomfortable for you, and also difficult to tolerate day to day. You should consider getting some behavioral counseling and perhaps seeing your family doctor for further evaluation. There are a number of therapies that can help, both medical and non medical, including not only ssri anti-depressants, but exercise and healthy diet, as well. There is hope, yet!