If you believe you can damage, believe you can repair
Emunah & bitachonTeshuvahHumility
To someone overwhelmed by the harm his actions have caused, Rebbe Nachman offered a powerful answer: if you believe it is possible to destroy, then believe it is possible to fix. The same faith that makes us take our mistakes seriously should also give us confidence that teshuvah and repair are always within reach. Despair, in Rebbe Nachman's eyes, is never humility; it is a failure of that very same faith.
Source: Likutei Moharan II:112