Priests and druids are super frustrating. As soon as they see Wings, it's just constant Fear and/or Roots + Shapeshift. Even with Freedom/movement increases...it's incredibly difficult to not waste your cooldowns.
I found that forcing an early trinket and then stunning + cooldowns is really the only way to burst someone down. This is my first season playing Ret in pvp, am I doing something wrong?
If you can force CDs out of the person you're fighting without using yours then you're in a good spot.
Easier said than done sometimes though. ._.