Addictions in itself is a chase for dopamine. Different chemicals affect the system in different ways, some by flooding the synapse with dopamine and others by blocking the uptake valve on the neuron. But what it boils down to is once the imbalance is in place it is permanent and irreversible, and actually gets worse over time without the substances. I need to be mindful of any and all behaviors that release dopamine. Internet, shopping, gambling, sex, eating... All activities release dopamine and the key for me for the rest of my life is to watch myself in how much i engage in any of those. But the mental obsession and existing in my head is a symptom of this dopamine imbalance and is prepetuated by my INFJ personality type. Since I was a child I always prefer to be alone, it is when I feel most safe and the most able to contemplate things, whether it be in self reflection, political/philosophical views, or my past/future. It can get overwhelming sometimes though. After a long day of school my family does not understand I require time alone, they always are pushing me to come hang out upstairs or watch a movie with them or this or that, and that being said I am not blaming them for their desire for interaction. But I do not have anything left to give of myself until i recharge by myself in contemplation. One thing that has helped me exponentially is meditation, as it is exactly what I need; a clearing of the mind.