I have read that when Michael J. Fox auditioned for Family Ties, he was $35,000 in debt and living on macaroni and cheese.
I wonder if he ever thought about giving up acting? I'm sure he did. It turns out he just needed enough motivation, drive and perseverance to get the first domino to fall. After that, the dominos kept falling and falling and falling.
So to all of you struggling writers, artists, actors, producers, directors, entrepreneurs...keep on keeping on. It's a cliche, I know, but get the first domino to fall, maintain your momentum and see what happens.