Head full of Fog.

I really feel like I am going through the wringer the last 7-10 days.  I can only describe it as feeling like my head is full of fog, I cant seem to attain any clarity of thought whatsoever.  Following my GP appointment last Monday it was discussed that a mood diary may be helpful, however I did this for the last 7 days and to be really honest, it made me look so crazy I ripped it up.  I kinda feel like one of those silver balls in the pinball machine right now, battered around from pillar to post but achieving nothing.  Mental Illness is so terribly draining, I am absolutely exhausted most of the time, I sleep all afternoon almost every afternoon this week and then have to be in bed again by 8pm.  It just makes life so hard, its so difficult to function as a useful part of society when these episodes take over.