Best we can do is heuristics, rules of thumb, etc.: ancestral wisdom based on as much time and experience as possible. Included in those — and among the most useful and reliable — are tips, not for maximizing benefits/successes, but for avoiding almost certain misfortune and ruin.
Hence: avoid harmful substances and behaviors (alcohol, drugs, gambling …); generally avoid/neutralize envy, greed, etc.; avoid killing; teach yourself contentment / how to live with life's basics / how to want what you have instead of trying to get what you want; keep an inner score card instead of a worldly, external one; care for the body; be charitable; beware tampering with complex natural systems (Chesterton's Fence); eschew superfluity; focus on process more than outcomes (what is in your control, not what is outside of it); etc.
Take care of your downside risk, and then acquire free options / expose yourself to positive expected-value uncertainty.