For centuries men have tried to find ways of making this simple set of guidelines more complicated and more difficult to understand and follow. Most of them succeeded admirably. Most got what they wanted by doing so. What they really wanted was less than they set out to achieve. Getting what you truly want is so difficult precisely because it is so simple.
Humans are very complex beings and thrive on making things even more complicated.
It might help to remember that the foundation of every religion, belief, system and philosophy that has worked its way to a culture and taken root is personal happiness. In every case, happiness is achieved by reducing things to their simple possible elements.