You may know this and have tried it already, but I thought I'd mention what we've done since we were practicing it just this morning...
Robin is scared/wary of strangers, and it's worse it we are out in public and someone stares at her-- she also does the window patrol, but we haven't tackled that yet.

She fixates and then barks and growls. It's embarrassing. What I've done is sit outside on the porch where I can see when people are coming before she does. As soon as I see them, I start working with her-- lots of sit, down, look at me, touch; I just throw it ALL out there to keep her occupied. When the people get close enough to walk by, I bust out a big AWESOME treat (my pups like hot dogs or the large-sized Bil-Jac goobers) and have her nibble it in my fingers as the people walk by; as soon as they pass she gets a click and the treat is aaaallll hers.
After a while, we moved on to her getting a click the instant her head turns toward people (or the cat or whatever else I was trying to morph into "no big deal")-- and I had to click the very millisecond that she turned or the opportunity was lost. We just today started actually adding the command.
Since her problem was going ballistic out in public as well as at home, we started on the porch, then the yard and sidewalk, then around the block, then a local pet store that clued us into their slower hours, and now we're working in the park and in food drive-thrus. She has FINALLY started initiating her own Look at That games. It's teeny tiny baby steps.
Admittedly, I've not yet read Control Unleashed

-- it's in my Amazon cart to buy next time I make a free shipping order-- so it's highly possible I'm doing this all wrong, but it's been working really well for us.

"In these bodies, we will live; in these bodies we will die.
Where you invest your love, you invest your life." --Marcus Mumford
--Amalie