David McConnell sold books door-to-door. Housewives were not interested and frequently slammed the door before he could make a sale. Instead of giving up, McConnell decided to give away a free gift—a small vial of perfume he made himself. He soon discovered the women preferred the perfume to the books. He stopped selling books and founded Avon, which became a great success.
When you do nothing, you learn nothing. But when you try and fail, you learn what doesn't work. That puts you one step closer to what will. It doesn't matter how many times you fail. What matters is that you succeed eventually.
Vincent van Gogh failed in several careers before he began to paint. And he did succeed.
Success once was enough for van Gogh. And the same is true for you—success once is enough.