"If one becomes a lawyer, scholar, mechanist, typist, scientist, production assistant, or what-have-you, the world will commend your decision. Each day at lunch, on vacation, or at whatever party you attend, your choice will be applauded, upheld, and affirmed. And you will know what is expected of you. Even if your job is difficult — if you are a brain chemist, international death merchant, or rocket designer — your responsibilities will be obvious and your goals concrete. If you achieve them, you may be rewarded by promotion. If you fail, you might be fired or demoted, but nonetheless — unless your boss is insane — the job will have tangible parameters. [Art], however, is different. You will never know exactly what you must do, it will never be enough… no matter what change you achieve, you will most likely see no dividend from it. And even after you have achieved greatness, the [tiny number of people] who even noticed will ask, ‘What next?’"
-From the book Supernatural Strategies for Making a Rock ‘n’ Roll Group quoted in this Medium post by my favorite author/artist Austin Kleon.