Meditation has only been a very small part of my practice. I've worked with a whole lot of different practitioners since about 2012. I can't really distil a decade plus of healing work into a comment that skeptical readers will find persuasive, but for those wanting to look into it for themselves, books by Gabor Maté and Bruce Lipton are a good start, and practices like Internal Family Systems, Family Constellations, EFT tapping, biofeedback/neurofeedback and Neuro-Emotional Technique are a worth trying.
In principle, emotional healing techniques are effective if they involve "letting go" of the physiological reaction (i.e., "trigger") that is activated when experiencing (or remembering) a traumatic event. Once the physiological reaction ceases to occur, the emotion is "processed", and is just a benign memory like any other. But that can take a huge amount of work over a long time for some complexes, if they are very, erm, complex, and deeply ingrained.
In principle, emotional healing techniques are effective if they involve "letting go" of the physiological reaction (i.e., "trigger") that is activated when experiencing (or remembering) a traumatic event. Once the physiological reaction ceases to occur, the emotion is "processed", and is just a benign memory like any other. But that can take a huge amount of work over a long time for some complexes, if they are very, erm, complex, and deeply ingrained.