Cheerful people are more likely to try new things and challenge themselves, which reinforces positive emotion and leads to success in work, good relationships and strong health, say psychologists.

• 心理学家说:快乐的人都比较喜欢尝试新事物,勇于挑战自我,这些举动增强了积极的情绪,使得人们在工作中取得成功,建立了人际关系良好,促进了身体健康。