Happiness is a subjective experience, and what makes people happy can vary from person to person. However, there are some common themes that emerge from studies on happiness. Here are some factors that can contribute to happiness:

1. Close relationships: Studies have shown that close relationships, such as those with family and friends, are more important for happiness than money or fame.

2. Exercise: Regular exercise has been linked to increased happiness.

3. Nature: Spending time in nature, whether its hiking, fishing, or simply looking out of a window onto a natural scene, can boost mood and make people happier.

4. Positive thinking: Cultivating a positive mindset and focusing on the good things in life can contribute to happiness.

5. Gratitude: Practicing gratitude, such as by keeping a gratitude journal or expressing thanks to others, can increase happiness.

6. Acts of kindness: Performing acts of kindness for others can make people happier.

7. Religion: For some people, religion can provide a sense of purpose and community that contributes to happiness.

8. Personal freedom: Feeling in control of ones life and having the freedom to make choices can contribute to happiness.

9. Good health: While health is not the most important factor for happiness, being in reasonably good health can help people enjoy life more.

Its worth noting that happiness is a complex and multifaceted experience, and what makes one person happy may not work for another. However, incorporating some of these factors into ones life can contribute to overall happiness.