It's a thing

Being the center of attention,
Unleashing the nerd,
Disliking something everyone loves

Mediocrity,
Substandard writing,
Crumbling under pressure

Underachievement,
Self-deprecation
Anticipation

The dentist visit,
An impulsive haircut,
Splurge on skincare

Numbers in physics,
Letters in mathematics,
Calculations in economics

My fears so varied
I confuse the Boggart.