Okay, first off, I do not think you should mention it unless you think it negatively affects your work. But then I think you should absolutely do it.
You do have to be critical about this. I don't know your situation. But if you are currently suffering from an addiction, you might be prone to some of the same psychological defense mechanisms. And this might give you a bias in your work. But it might also be the complete opposite. So... just be critical and honest with yourself. If it negatively affects your work, you should not be doing this kind of research.
Also think about the worst case scenario: What if someone else finds out? Would that be a career destroying situation? If that is a chance, then it is always better to admit it yourself before someone else can. It will help you stay in control of the narrative, and people will not hear about it from rumours.
Your second point was that your personal experiences have actually helped you in some way. That might be true because you do not shrug something off as a minor issue if you personally know that it can be a big problem, etc. However, your personal experience is NOT science. You write in a comment that you "feel like [you are] pulling “facts” out of the air lol (because no citation), where actually the “fact” came from experience and interaction with people similar to me". Don't do that! Your scientific work cannot rely on anecdotes. You either have to cite a reference or you have to apply the scientific method, make people fill out questionnaires, write a study and evaluate its significance, and so on.
If it feels like you are pulling facts out of thin air, then you are not doing good scientific work, no matter how true those facts are. You have to have some kind of measure of the truth of your facts. Personal experience is not a valid one. So if you think about using your personal experience to help you in your research, do so by using it to find areas that still need to be considered, but then consider those areas with the scientific method.
Finally, I want to emphasize that it is not a good idea to self-medicate or to power through an addiction, just in case that is something you're doing. Whatever your situation might be, I hope you deal with it by getting some professional help.