要找到真正的幸福，你必须先放下旧的怨恨。

To find true happiness, you must first ___let ___go of old resentments.

他很难摆脱自己让家人失望了的想法。

He struggled to ___let ___go of the idea that he had somehow failed his family.

前进的关键在于放下你无法改变的事情。

The key to moving forward is ___letting ___go of what you cannot change.