"Never hope more than you work."
I am often inspired by the brevity and simplicity of quotes. Another, by Henry Ford, is "Think you can or think you can't. Either way you're right."
The importance to me is the glimmer of motivation that comes from such a tiny suggestion. With "Never hope more than you work," it serves to remind me that, as writers, we can't just wait, to be discovered, to sell our work, or to get published. We can't hope it will happen. We have to make it happen.