Nemeses

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

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 nemeses of clean energy are the fossil fuel industries that have long dominated the world's energy production.

The musician's nemeses, stage fright and technical difficulties, affected her performance.

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