Unsatisfied, restlesness. Suggest.

Hi! I feel some kind of restlessness and unsatisfied feeling . I get a feeling that i am done with everything and nothing is making me happy. Nothing is giving me a feeling which one gets when someone does something new apart from daily chores or something of their personal interests. There is a certain kind of quest for something but i am not able to figure out what exactly i want, to satisfy this inner quest. As through the day i am busy with office, it usually comes at night when i am in bed trying to sleep. But this hampers my sleep too leaving me restless. Cant figure out what should be done and what is lacking. I always keep thinking what else can i do in life and things like these.  Please suggest.