In Letters to a Young Poet (1929), Rilke corresponded with Franz Xaver Kappus, a young poet who was not sure whether or not to go ahead with a career in the arts or to stick with the Austrian military. It seems clear that anybody seriously considering those two paths in life would not be well-suited for a lifetime of uniformed service, but Rilke took the query seriously.
Commenting on some poems that Kappus had sent and some questions about their worth, Rilke had this to say:
You ask whether your poems are good. You send them to publishers; you compare them with other poems; you are disturbed when certain publishers reject your attempts. Well now, since you have given me permission to advise you, I suggest that you give all that up. You are looking outward and, above all else, that you must not do now. No one can advise and help you, no one.
Feedback is necessary, particularly when it helps writers overcome blocks or be more attentive to flaws that escaped their notice in the first draft. But waiting for acceptance from the outside world or permission to continue on is a fool’s errand. Better to follow Rilke’s advice to dig deep, find a reason, and write as though it were your last day on Earth:
Go within. Search for the cause, find the impetus that bids you write. Put it to this test: Does it stretch out its roots in the deepest place of your heart? Can you avow that you would die if you were forbidden to write? Above all, in the most silent hour of your night, ask yourself this: Must I write? Dig deep into yourself for a true answer. And if it should ring its assent, if you can confidently meet this serious question with a simple, “I must,” then build your life upon it. It has become your necessity. Your life, in even the most mundane and least significant hour, must become a sign, a testimony to this urge.