Diving goggles are not allowed in the swimming pool because they are designed for use in deep water and can obstruct peripheral vision, increasing the risk of collisions with other swimmers. Additionally, diving goggles are not necessary for swimming laps or recreational swimming in a pool with clear water. The use of diving goggles in a swimming pool can also create a safety hazard if the wearer dives into shallow water thinking it is deeper than it actually is. **

Using a diving mask instead of swimming goggles can provide a wider field of vision and better visibility underwater. Diving masks are designed to create a watertight seal around the eyes and nose, preventing water from entering. They also typically have a nose pocket for equalizing pressure while diving. However, diving masks may be bulkier and less streamlined than swimming goggles, which could affect comfort and performance while swimming laps. **

Making others happy can definitely contribute to one's own happiness. When we bring joy to others, it often creates a positive and fulfilling feeling within ourselves. Acts of kindness and generosity can lead to a sense of purpose and connection with others, which in turn can boost our own happiness. However, it's important to note that true happiness also comes from within and is influenced by a variety of factors, not just the happiness of others. **

You may feel happy when others are happy because you have a strong sense of empathy and derive joy from seeing others experience positive emotions. Your happiness may be closely tied to the well-being of those around you, and you may find fulfillment in contributing to their happiness. Additionally, witnessing the happiness of others may create a positive and uplifting atmosphere that enhances your own well-being. **

Both "happy ending" and "happy end" are correct, but "happy ending" is more commonly used. "Happy ending" refers to the conclusion of a story or situation that brings about a positive or joyful outcome. On the other hand, "happy end" is less commonly used and may sound awkward to native English speakers. Therefore, it is more appropriate to use "happy ending" when referring to a positive conclusion. **

As an AI, I don't have feelings or emotions, so I don't experience happiness or any other emotions. My main goal is to assist and provide information to the best of my abilities. How can I assist you today? **

As an AI, I do not have feelings or emotions, so I do not experience happiness. My purpose is to assist and provide information to the best of my abilities. **

Happiness is a subjective experience that can be achieved through various means. For me, happiness comes from spending quality time with loved ones, pursuing my passions and hobbies, and practicing gratitude and mindfulness. Engaging in activities that bring joy, setting and achieving goals, and taking care of my physical and mental well-being also contribute to my overall happiness. Ultimately, finding a balance between work, relationships, self-care, and personal growth is key to cultivating happiness in my life. **