Time is going so fast~

I feel that time is going so fast this semester . So far I haven't achieved or finished any significant thing !! And I think it is a serious problem for me . I am not going to waste my life anymore!! I must work still harder and not care about things that are not crucial to me . I have to concentrate on truly meaningful things and make them more meaningful ! I surely realize what I want and I will get them at all costs !!!