It's A Beautiful Day To Unfuck Yourself
Have you gotten your copy of my science-based (and darkly funny!) book, Unf*ckology: A Field Guide to Living with Guts and Confidence?

I used this technique below -- I tried on the persona of my boss at Ogilvy to develop my own confidence, responding as if I were her when I had to do small, socially hard things (socially hard if you're timid and socially awkward, which I was back then).

I did this simply because I was desperate to change and couldn't really think of any other way to do it. However, it turns out that what I did has a really solid basis in the latest science in exposure therapy, memory research, and neuroscience.