"Chasing Pavements"-Adele

Adele brings up an interesting question in her song, “Chasing Pavements”, that I think everyone struggles with in their lives. “Should I give up or should I just keep chasing pavements/ Even if it leads nowhere? / Or would it be a waste even if I knew my place/ Should I leave it there?”(Adele). Should someone give up their dreams just because it may be unrealistic or is it better to pursue dreams no matter what?