Should I keep looking for a job even though I am unsuccessful?

I suppose in respect to work that the USA is the same as England these days, it is I am afraid a bosses world and they call all the shots as they know darned well that someone will do anything (I mean work long unsocial hours sometimes for poor pay) to secure a job.
It does mean of course that you have to keep trying and one day you will find one that suits your abilities.Don't even think of giving up Maxine.