Aries: Inactivity, having nothing to do.

Taurus: Not having enough money       (Mood)

Gemini: Having no one to talk to

Cancer: Being replaced.

Leo: Ageing 

Virgo: Getting sick

Libra: Fighting with someone when it's unnecassary 

Scorpio: Falling deeply in love with someone they know they can't have.  

 (I gonna be completely honest, as a Scorpio myself, I feel like we would more scared by losing a loved one or being hurt by someone we trusted. That's just me though.)

Sagittarius: Not having the freedom to do things.

Capricorn: Not succeeding 

Aquarius: Not given independence.

Pisces: Being forced or rushed into something

(I have a Pisces friend and I asked if this was accurate, answer, yes, for both of us.)