In H.G. Wells' "The Diamond Maker," the narrator grapples with feelings of doubt regarding the value of pursuing his ambitions. He questions whether the struggles and sacrifices associated with his goals justify the potential rewards, expressing a sense of frustration and weariness with the challenges he faces. Despite these doubts, he acknowledges the importance of perseverance.

Ultimately, the narrator recognizes that abandoning his ambitions would lead to a life filled with regret and unfulfilled dreams. He understands that while the journey may be arduous, the pursuit itself brings meaning, and giving up would result in lasting sorrow and disappointment. This reflects a universal struggle between the desire for achievement and the fear of failure.