There are several factors that can contribute to someone's extreme happiness. Let's explore some of them:

1. Meaningful Relationships: Building and nurturing strong connections with family, friends, and romantic partners can bring immense joy. Research shows that positive social interactions release hormones like oxytocin, which promotes feelings of happiness and well-being.

2. Accomplishments and Goals: Achieving personal goals and experiencing a sense of accomplishment can lead to great happiness. Whether it's completing a difficult project at work, winning a sports competition, or mastering a new skill, reaching milestones gives a sense of purpose and satisfaction.

3. Gratitude and Mindfulness: Practicing gratitude and being mindful of the present moment can significantly increase happiness. Taking time to appreciate the small joys in life and focusing on positive experiences can shift one's perspective and enhance overall well-being.

4. Pursuing Passions: Engaging in activities that bring joy and fulfillment can lead to extreme happiness. Whether it's painting, playing an instrument, or participating in a favorite hobby, pursuing passions allows individuals to express themselves creatively and experience a deep sense of satisfaction.

5. Helping Others: Acts of kindness and altruism have been linked to increased happiness levels. When individuals extend a helping hand to others, whether through volunteering, donating, or simply offering support, it not only benefits the recipient but also brings a sense of purpose and happiness to the giver.

6. Physical and Mental Well-being: Taking care of one's physical and mental health is crucial for experiencing extreme happiness. Regular exercise, a balanced diet, quality sleep, and practicing self-care activities like meditation or yoga can contribute to overall well-being and a positive mindset.

It's important to note that what makes someone extremely happy can vary from person to person. While these factors are generally associated with happiness, individual preferences and circumstances play a significant role in determining what brings extreme happiness to each person.

References:

• Lyubomirsky, S. (2008). The how of happiness: A scientific approach to getting the life you want. Penguin.
• Diener, E., Lucas, R. E., & Oishi, S. (2002). Subjective well-being: The science of happiness and life satisfaction. Handbook of positive psychology, 2, 63-73.
• Emmons, R. A., & McCullough, M. E. (2003). Counting blessings versus burdens: An experimental investigation of gratitude and subjective well-being in daily life. Journal of personality and social psychology, 84(2), 377.