Being kind and compassionate, having a clean heart, bringing peace to others, and standing up for what is right, even if it means facing difficulties. Those are the values that will bring you happiness.
If you believe that you don’t need God to know what is right or wrong, that humans are just an accident of nature with no more value than a rock, have no issue with people like Stalin, Hitler or Mao Tse-Tung who all killed millions upon millions of humans based on these same assumptions, then read no further.
Every religion, every culture, has some version of these. These are moral principles. These are the natural laws of love. Love does not kill, love does not bear false witness, love does not commit adultery. (Not real love) Remember “Love the purpose of life is the willing of good of the other person.”