Just to clarify, are you looking for a general resource as a way of deepening personal inquiry or are you trying to hunt down the root cause of your TMS?
Oftentimes there isn't a significant event or experience we need to uncover. For most of us our TMS is more centred on how our personality navigates through life and how these reactions can cumulatively lead to an excess of tension.
This is a great post by
@Steve Ozanich on this common stumbling block.
http://www.tmswiki.org/forum/threads/seeking-the-grail.529/ (Steven Ozanich - Seeking the Grail)
Plum x