never in my whole life did i encounter the meaning of 'mentally exhausted'.  never did i think that i would be in such a state.  but i am.  i didn't think that it would be possible, but it is.  my course is taking too much out of me.  they're all pulling me in different directions, none of which is a path i want to cross.  i suppose this is how it feels if you're not really supposed to be in this profession?  but i can't back out.  not now.  i'm not trying to dramatize this, but i can't.  i've invested…