I have been working with myself and two clients on cracking our engrams.
Engrams are much like a memory capsule, much like an airplane’s black box. They are recorded with a human yet mechanical recording device, the reptilian brain, that never sleeps.
The content of the engrams is every detail around a traumatic incident where you were in an altered state, sleeping, fainted, in anesthesia, or in a shock. None or little of it is available to the conscious mind, directly, instead the engrams act like a hidden program, like an ad-ware, that pops up whenever there is any similarity between the present moment and the moment of the engram recording.
In 1996, which was 15 years ago, I had a friend do a therapy session with me, that was weird, but very effective. It also left him with a burn mark on his thumb.