A good way to see it is that Hollywood is a party that you haven't been invited to yet. No one owes you anything, or needs to hold open a door to let you in. So you need to earn that invite past the Doorman (who also has a script) by hustling and writing every day. It's like lifting weights: the more you do it, the stronger you'll get. The more you sweat in training, the less you'll bleed in battle.