For the past two weeks, I have been unable to get proper rest.
It wasn't because of any life stressors (such as losing a loved one); I had been started on new medications and simply couldn't fall asleep.
I was yawning every 5 seconds with my eyes closed, and despite lying on my bed for 2 hours, I was still unable to fall asleep. Needless to say, I was frustrated.
The situation was tolerable at first. However, by day 3, I was starting to lose it. I had become noticeably more irritable, clumsier and generally miserable.