Detailed Instructions: In this task, you're given five sentences, numbered 1 through 5. Your job is to generate a title for the story that makes complete sense. The title must be short, with less than three words, use simple language, and include the main topic of the story.
Q: Sentence 1: Charlie is really bad at playing tennis. Sentence 2: Charlie really wants to get good so he practices all day and night. Sentence 3: After a couple of months of practicing, Charlie gets very good. Sentence 4: Now that Charlie is very good at tennis everyone likes Charlie. Sentence 5: Charlie is glad he practiced so hard at tennis.
A:
Tennis