I'm Tired~

0100hrs.. at my workplace now.. got to work till tml morning 7.30am plus 8.. nowadays kept having this mixed feeling.. dun realli feel happy.. At times, i feel so lonely... Live for 21years+ le.. what have i achieved? i guess.. i can't even tell.. Am i happy? Is this the kind of life i wanted??? Is there anything that can spice up my life? is there a world of wonders?