The document discusses four theories of happiness: 1) Pursuing wealth, possessions and pleasure does not lead to lasting happiness. 2) Taking care of one's physical and mental health through habits like exercise and diet contributes to happiness. 3) Caring for the environment and others can make one happy. 4) Acts of kindness, giving, and caring for others, even through small daily gestures, promotes real and lasting happiness more than self-focused pursuits.