Summary
This quote suggests that the person's calculations or predictions are influenced by their assumption that they will face bad luck in any given situation. It implies a pessimistic mindset where they anticipate unfavorable outcomes. By factoring in the possibility of luck working against them, they may be inclined to take precautions or make decisions that are more risk-averse. This mentality can also indicate a lack of confidence in their own abilities or an expectation of constant obstacles.