A little girl who finds a puzzle frustrating might ask her busy mother (or teacher) for help. The child gets one message if her mother expresses clear pleasure at the request and quite another if mommy responds with a curt 'Don't bother me – I've got important work to do.'
I'm blessed with a good pair of ears. That's how I fooled my piano teacher. I'd watch his fingers and I'd listen to it and I just kind of basically learned it by myself.