I keep my hands behind my back and even click behind my back because otherwise I'll catch myself luring. Luring is what comes naturally to me though, but Cricket is starting to get the hang of free shaping. Bamm still doesn't get it and will get frustrated so I'm taking the shaping thing slow with him. Joey doesn't understand luring that well OR shaping really so he's a tough cookie to work with, but he'll catch on eventually I'm sure of it.
Right now when it comes to learning to free shape, I'm really really focusing on Cricket. She has a lot more patience with me than the boys and she is so eager to make that clicker click which is why I think she is catching on to the shaping so much faster than the boys.
This is a fun learning experience for me honestly. I've always lured most of my stuff so the shaping thing is still a bit foreign to me and a super test on my patience. I really feel like shaping will advance myself as a trainer though so I'm pushing through it even though I do get frustrated at times.
As was mentioned, if you get frustrated just walk away for a bit. If I get frustrated I just ask for a behavior my dog knows already to end that session positively and then come back to work on the behavior that was frustrating me after I've had a chance to recollect myself. I like the idea of playing music in the background too. Haven't tried that, but since I tend to get frustrated easily when I'm training I might have to give that a shot.
Joey- Ibizan Hound
Cricket- Mexican Street dog (we think Xolo mix)
Bamm- BC mix