Check out the books Nutrient Power by Dr. William Walsh, and Stress Less, Accomplish More by Emily Fletcher.
Nutrient Power looks at why psych meds work well for some people and have horrible side effects for others (a common reason for avoiding medical assistance for depression) and talks about nutrient therapy for addressing the upstream causes.
Stress Less, Accomplish More is hands down the easiest meditation practice I’ve ever tried, and it’s been the single biggest contributing factor to calming me down… prior to adding Z-Technique Meditation I could barely sit still long enough to get through a single hour long sub.
Game changers… and they’d pair exceptionally well with subs like Regeneration and Rebirth. Elixir too.
You might also want to consider a good gut probiotic, one of my friends runs an organization called The Gut Institute and she talks a lot about how so much of what goes on in the brain (re: neurochemistry) has origins, or at least triggers, in the gut. Rebalancing the gut microbiome can have very beneficial effects on mood, thought clarity, etc.
I wish you the best!