I'm sorry...had one of these nights myself the other day. I had an entire year of almost ZERO sleep every night where I would sleep for 10-15 minutes at a time then be up for an hour or more...it was AWFUL. One thing I will say for tDCS is that it definitely got my sleep patterns back in order. I still have off nights but generally get 6-8 hours of sleep a night and that made a HUGE difference in my ability to function day in and day out.

Hope you got some sleep and that tomorrow is a better day/night for you. Take care.