Time keeps slipping away

So I have come to the conclusion that one of my biggest struggles lately is "time". I feel that there is never enough and that my life is always dictated by the clock and it's really starting to weigh heavy on me.  I need so much not to be so constrained by the ticking of time.  Be here, be there, get this done...it just goes on and on.  So what do I do?  I'm not sure, but I'm sure someone can help me stop feeling like a prisoner of time!