All of which is flows. A physical pain is simply accumulated pain that isn't flowing. A fixed idea is at attempt to make energy not flow that really is flowing. A traumatic incident can have a negative effect only because a flow has not been allowed to complete. Polarities exist because of a lacking flow between different aspects of the person.
Any technique is valid that makes energy flow again.
Exercise - List all the phenomena you can think of that transformational processing addresses. Notice how it is a flow that is blocked and the technique gets the flow moving.