A simple satisfying life can be developed through attention to the four relationships. Within these four relationships we find the secrets to unshakeable happiness.
As humans we have four jobs. They are as follows:
1) Take care of our bodies and the earth by extension of the reasoning the health of our bodies is contingent upon the health of the earth.
2) Get to know yourself. This means take time to learn the contents of your thoughts through meditation or some other practice. Mental hygiene is essential for clear communication and right action.
3) Learn to communicate effectively with others and develop compassion.
4) Care for your material possessions and your relationships with them. This means make sure that you are in control of your possessions and that they serve a positive purpose as opposed to them controlling you. By extension, this will help take the burden of pollution from the natural world.
Simple, not easy.