Nemeses

The farmer's nemeses were the locusts that ate his crops year after year.

Her mother was her nemeses when it came to fashion choices.

Impulsive buying was one of her nemeses that resulted in a financial crisis.

His fear of public speaking was his nemeses when it came to advancing his career.

Her fear of public speaking was one of her nemeses in her career advancement.

The scientist believed that time was the ultimate nemeses, always ticking away and limiting his ability to achieve his goals.

Time management and work overload were his nemeses at the workplace.