On your draft of your story, write at least 3 different types of titles. Even if you have a title that you like already, it doesn't hurt to play with different types of titles. Ask your classmates, friends, or family which title sounds the most interesting.
Examples from my personal narrative about going to Europe for the first time and having a possibly supernatural experience:
Summary title: My European Adventure Preview title: An Experience that Changed My Life Teasing title: From Joy to Terror in an Instant Character title: Allison and Krissy's European Adventure Line title: The Laughter of Little Girls Question title: Was It Real, or Was It All a Dream?