change the first word from optimism to hope and then this is correct.

optimism is fragile and shatters in the face of disappointment.

hope can carry you through the hard times and accomplish the hard tasks.

source: Man’s search for meaning by Viktor E. Frankl

Frankl distinguishes between hope and optimism, emphasizing that hope is rooted in finding purpose and meaning, even when the situation seems hopeless. Optimism, on the other hand, can sometimes be unrealistic or disconnected from reality. Frankl argues that hope, tied to a sense of meaning, is what sustains people through suffering.