Do research. Feed your talent. Research not only wins the war on cliche, it's the key to victory over fear and it's cousin, depression.
Writing is a marathon, not a sprint.
Talent without craft is like fuel without an engine, it burns wildly but accomplishes nothing.
All writing is discipline, but screenwriting is a drill sergeant.
Stories are the currency of human relationships.
No civilization, including Plato's, has ever been destroyed because its citizens learned too much.