[ The sheer strength of the man always took T'Challa by surprise, most would have broken under the weight of the trauma and the amount of loss. Hydra stole everything about him and T'Challa doubted he would have handled it as well as Bucky. It only made him more determined to help the man find his peace and the safety, the very least he could so for the added grief he offered to the man before.

Lips twitching at the corners, he ran his fingertips along the surface of the tablet in his hand to show Bucky the device they created to literally wipe out the words from existence. ]

As you can see, this device will remove the words and no one will be able to trigger you again. But the one downfall is this will remove the enid existence and origin of the words. As if they never existed. You will not forget anything you did but will not recall the words that triggered you to do it. The mind neurons are an all or nothing, I'm afraid.