What is harder than a stone or softer than water? However, soft water can penetrate hard stones, it just takes persistence.
A young man went to Microsoft for an interview, but the company had not posted any job advertisements. Seeing the General Manager's doubt and suspicion, the young man explained in not-so-fluent English that he was passing by and decided to come in impulsively. The General Manager found this novel and decided to give him a chance. The results of the oral test were unexpected - the young man performed poorly. His explanation to the General Manager was that he had not prepared beforehand. The General Manager thought he was just looking for an excuse to save face, so he casually replied: "Come back for a try when you're ready."
A week later, the young man walked into Microsoft's door again. This time he still did not succeed. But compared to the first time, his performance was much better. And the General Manager gave him the same reply as last time: "Come back for a try when you're ready." In this way, this young man entered Microsoft's door five times, and was finally hired by the company and became one of their key trainees.