When a person has deep longings that seem impossible to fulfill, what should he or she do?

I believe that the best answer for this is that that person should pray.  They should ask God for patience, most of all, in their time of waiting.  For instance, I've been longing to have a full-time job for about two years now.  I pray about it, but that doesnt mean that if I just pray about it once that a job will just fall into my lap the next morning!  I have become frustrated on this very long wait and so every now and then I need to ask God to give me strength and patience as I wait for the right thing to come along