Simply put we have two divisions of our brain, the neocortex which receives and stores information for decision making and consequences and our limbic system which controls automatic things like breathing as well as our emotions and fight or flight responses.
When we allow our emotions to rise to a heightened state a chemical switch is thrown and turns off that pre-frontal cortex and the consequences are not usually good.
To keep from doing things we hate to do therefor, we must learn to “be angry and sin not” in addition to “a still small voice turns away wrath”, both great instructions from God’s word.
A traumatized brain resulting from drug, alcohol and other destructive coping mechanisms will heal. However, it takes time added to the truth of God’s word so that Jesus words become effective in our lives: “You shall know the truth and it will set you free,” and “I have come that you might have life, and that abundantly.
There can be no joy, peace, abundancy or recovery without His truth.