The next thing on my list : a novel

After June Parker offers a ride to Marissa, a virtual stranger, her passenger dies in a freak accident. Filled with guilt, June compares her own lackluster life as a mid-level L.A. Rideshare employee to the promise of Marissa, who had just lost 100 pounds and bought her first pair of stylish shoes. June knows this because she salvaged Marissa's list of "20 Things To Do by My 25th Birthday" from the crash, and those were the only two items crossed...