Unable to focus on real things. Is 28?

Dear doctor I have very strange problem in each day my mind always things two things 1) I always day dream on virtual things which will never possible and day dreams for hours i am in this habit since i was child or remember my life i do this while doing my job driving to any place or in any situation 2) if any problem comes up to me i am very much Concerned unable to focus always think what would happen if this will occur and go to worst case until the problem resolve Can you suggest what disorder this is how to get this resolved where i can consult i have wasted lots of tiMe of my life because of this not sure why i did not focus this is mental disorder or seek out for help yet my age is 28