@ Wanderlust. Yes, due to neurogenesis and neuroplasticity, it is a definitive possibility for your brain to recover. However, it may take a while. It might be a good idea, to increase physical activity such as exercises as it is proven that endorphins and other chemical compounds are released during exercise that function as natural painblockers, making you more resistant. Trauma and its related emotional triggers on the other hand, are extremely tough to deal with and normally has lingering effects. In both Bipolar individuals as well as addicts' are specific emotional centers such as the amygdala and other areas of the limbic system enlarged/over-(re)active. In this particular case, meditation is proven to yield promising results. Especially in terms of the weakening of neural pathways between the "me-center" located in parts of the prefrontal cortex and emotional centers (and they even shrink and become less active overtime). Often people think that the opposite of addiction is sobriety, its actually not. The opposite of addiction is CONNECTION (Johann Hari). If you're interested, of cause, google "ratpark and addictions" as well as "Dr. Mark Lewis". He's a reformed addict turned neuroscientist with an interest in Developmental Psychology.
Good luck Wanderlust.