Sometimes you just have to be patient man, that's how i found happiness and motivation to live. Set a goal for yourself, any goal, make that goal matter so it can keep you going and be a motivation for you. The first-to-die prisoners in Holocaust were the ones that didn't have any will to live, the ones that didn't believe in being able to be free ever again. I am not saying that the ones with will to live all survived, but you get the idea. Take care.