Do you ever write down stuff to tell your T? Even if you just write down how frustrated you are now and save it for your next session. When I don't know why I feel something and get asked the inevitable "well what do you think has caused this?" I just say "If I knew the answer, I wouldn't be here and you wouldn't have a job!" That way I vent my frustration but they know I'm trying my best.

Your sleep will be affecting your mood, lack of sleep is horrible, it will make you irritable and put your brain into a fog. So you could tell your T that.

If you can get a little exercise today, set a clear goal in your mind for the time you want to finish online and texting, watching tv, etc and find something trashy to read. That usually helps settle me for sleep.