Yes I can relate to this very much. Worry and anxiety describes me. I agree with others that seeing a psychiatrist and therapist. Meds and then talking about the feelings you have can help. Also support groups. I have been on many meds for sleep,anxiety,and depression. I have had little luck but know for some it really helps. I do feel that sometimes there is a brain chemistry that needs help by meds. Have you been on any? I also did a therapy called biofeedback which is supposed to help you relax yourself etc. Do you have support in terms of family and friends?
I wish I could help more. If you want an email buddy I am here