kick me!

Can somebody kick me on the head? I lost interest in going to work. It's really strange to think thatI have a challenging job. The pay is good. I am given bigger responsibilities, meaning my bosses approve of my performance. I might be due for promotion (if i get lucky). But i am not excited to work. I don't know why. It's just that letely i get very tired at the end of the day. I seem to lose my energy to work the following day. I know i should be thankful because i have work, when others are jobless. But still, this. Now tell me, am i weird?