Maybe you should try therapy again, since it helped the first time. I'm a chronic worrier too. I spent all my time worrying something was going to happen to my child so I was very controling. Tried my best to let her go and do things but meanwhile i spent the whole time worrying. I learned how to talk back to myself and reassure myself that all would be well. My daughter is now 38 and I still worry about her, especially if she is traveling. When I'm not worrying about her I'm worrying about something else. The anxiety is awful. Thankfully, I'm on meds that help.
Gayle