Finding Inner Peace

I have a question about this episode If You Feel Weak, Exhausted or Sick, You Need to Watch This | Tara Mackey on Women of Impact and this clip Trusting Your Intuition. I struggle with addiction, and when I start drinking or using drugs, it gets bad quickly, leading to 3-day hangovers and week-long withdrawals. Although I manage to get sober, I often relapse a week or two later. Sometimes it's worse than others, depending on how fast I decide I need to stop. I'm severely depressed and tired of living this way, with no joy or tranquility, which leads me to give in to drinking and drugs again. I desperately want to be sober and find peace. Is there anything specific I can focus on, such as vitamins, gut health, or other lifestyle changes, to break this vicious cycle?