Anxiety, which causes my insomnia. When my brain refuses to shut up, I get nothing done. No sleep. No writing (I'm a writer). Nothing. I just sit and hear my obsessive thoughts run over and over in my head. Getting silence is an ordeal.

Physically, anything that affects my breathing drives me crazy. Also, I cannot stand dry mouth. I drink water all night which affects my sleep. I wouldn't wish that on anyone.