I think this ^ is a very dangerous blanket statement. Nothing related to childhood abuse is "very simple" and sometimes those memories have themselves wrapped around your inclination to submission. Sitting down and figuring out what you want out of a relationship and what you bring to the table is a good idea, bdsm or not. Expecting a potential dom to be sensitive to your past is one thing...but it's quite another to presume that he will be willing OR ABLE to work with you to overcome that abuse.
Is therapy the only way to work through past traumas and abuse? No. But in this case, where there is a feeling of "desperation" and fear, it may be the wisest.