While the primary goal of EFT is to bring about emotional freedom and inner peace, we actually need to tap on the "negative' emotions during the tapping process in order to acknowledge them and clear them out of the body, mind and spirit. It is kind of like pulling weeds in the garden. Not to worry, we want to release these "negative' emotions so that positivity flows freely again. And of course, Steph likes to add in some positive tapping at the end of every tapping video!
