I am sad and i am happy..!

I'm sad and yet happy..thats a new feeling that i've discovered for my self.. trying to figure out the reason for that but no fruits of sucess till now..May be its coz of things happening in my heart, soul and mind or maybe its coz of things which i fail to realise or things which i dont wanna realise or maybe the reason is still yet to be found..Seems strange but thats the way it is for me...