Adriana, I think this article will help a lot of people. I read a book once that described the state of frozen-ness anxious people can have emotionally and the author suggested doing a task so small as to move a paperclip from one space to its home or the trash even. Moving that one thing helps unstick our minds and allows us to begin the journey of focus and flow.
Thank you for these great tips. The book you quote from sounds like a good read, too.