Summary
The quote suggests that the speaker is experiencing a consistent and ongoing streak of luck or fortunate events. Despite the constant stream of positive outcomes, the speaker remains silent, quietly acknowledging their good fortune. The phrase "incessant good fortune" indicates a pervasive and continuous sense of luck, which evokes a feeling of contentment and satisfaction in the speaker. The silent smile conveys a sense of appreciation for the string of positive experiences without boasting or openly acknowledging their success.