Nothing else filled my heart with so much joy.

没有什么比它更让我开心了。

youdao

There was nothing in this world that filled my heart with such joy.

在这个世界上，没有什么能让我的心充满这样的喜悦。

youdao

Just being able to help her in her time of difficulty filled my heart with such love and happiness.

能在她困难的时候帮助她，让我的心里充满了爱和幸福。

youdao