@Psymonkee Sleep is something that I think is key to mental wellbeing. One thing that works for me (e.g. if my sleep pattern becomes 'abnormal') is to try to skip a nights sleep, and the following day stay awake until late evening, so that you feel completely exhausted and want nothing more than to sleep.
If you head is full of thoughts, sometimes going for a walk for about an hour either alone, or with someone you get on well with can help to relax and clear your mind. Perhaps a longer walk if you feel like as though you have an excess of energy.
If your mood improves at all, you could try setting small goals for each day, maybe reading a novel for a couple of hours etc, but I would probably just focus on things you enjoy doing. Don't know if this helps, but good luck.
