everyone needs a break now and then... just concentrate on improving your state of mind right now... no sence going to the gym in a mental haze and hurting yourself... do something else interesting... enjoy the summer while its here... bike, rollerblade, walk, swim, jog... whatever... get outside and move, you'll start feeling better about yourself and be actually up and moving around again... from there, just ease back into it...
don't bother keeping it happening, its part of life and you can't keep life from happening... chances are when you get back to it (AND YOU WILL!!!) you'll be more refreshed, stronger and able to do more... you can't beat yourself, just take some time off and enjoy it!!!