However, beyond just feeling good, happiness also contributes to our life, to our relationships.

然而除了感觉好，快乐还对我们的人生有帮助，对人际关系有帮助。

哈佛公开课 - 幸福课课程节选

I'm glad is so great to use when you're feeling good about life. When you're feeling happy.

当你对生活感到很满足，感到幸福的时候，都可以使用“I'm glad”句型。

I'm glad 课堂 - SpeakingMax英语口语达人