Time to end!

Really at the cross road now! one side is to give up and look for a better place or to endure and persist to the very end. Who can enlightn me? For unknown reason, i can't seem to have the energy like what i used to have. Nowaday, it's always seem like i always tired and moody. Why is that so, is it because i have too little sleep or is it something more then that. No matter what the reason is, the fact that this is the time to think about it still remain.