I suppose, the first 'inner' steps to conquering stress is cultivating unbending willpower, holistic resilience (mentally, emotionally ie no self pity, sentimentality) and... 0 self importance. (ie who cares what I think. With nothing to defend, any attacks inherently fail/backfire.)
Then... sunshine, salicylic acid salts (such as CalciumSali or MagnesiumSali), Methylene Blue, some cannabinoids & terpenes (to customise the therapeutic experience), Carbs & Gelatin...
Also... Cacao, Kava root... Agmatine, Caffeine, Theanine, sea salt...& a sense of humour...