One way a writer’s stubbornness pays off is when you’re a young writer and your parents tell you that being a writer is a ridiculous idea. How will you live? (My father’s line was that he wasn’t supporting me until social security took over.) That’s a good question and you will have to find an answer to it some day. You may be one of the few who make a living off writing, but most likely you’ll need the help of another job or a tolerant, well-paid spouse or a trust fund or some other, preferably legal, means of support.
BUT—you will need to be stubborn, regardless, when family members and sometimes even lovers/husbands/wives tell you that your dream will ruin your life. As with many dreams there is an element of the ridiculous to it. Also there’s that hubris. Who do you think you are anyway? Why can’t you just be satisfied with a normal job and life(whatever that is)? Who would want to be a writer anyway? Be real. Grow up.
Contrary to movie and TV show notions of reality most people do not have a dream that fills their life. They have desires. Every single one of us has those and we have them all the time. But the big dream is rare. If you have it, you will not be understood by most people. Sometimes you will not be understood by those who love you. Probably you won’t even really understand it yourself. SO you have to be stubborn. I prefer a polite, quiet totally inflexible stubborness, but the loud, rude kind certainly has a dramatic quality. Whatever. Be stubborn. Write.