I too have an anxious attachment just like yours. What has helped me a lot was to read books (mostly self-help but also basic psychology) about anxious attachment.

One that really helped was Anxious To Please by James Rapson. The author does a wonderful job explaining the roots of anxious attachment and how to overcome your insecurities due to your attachment.

Another book I'd recommend is called Attached by Amir Levine. This book deals more with teaching the reader about anxious attachment, but it's a good read that I think might help.

That's pretty much all I've done to deal with my anxious attachment. I wish I had some better advice for you. I do understand though. I can really sympathize with how you feel.