Nicolas Feltron is a data analyst and designer who creates annual personal data reports. He collects and analyzes data about his activities, travels, moods, and relationships. Feltron's reports have been recognized for extracting insights from diverse structured and unstructured data sources like calendars, photos, social media, and more. While initially collecting as much data as possible, Feltron now takes a sampling approach to gain understanding while balancing completeness with sustainability. His work aims to discover connections within personal data and visualize insights about oneself and how one's behaviors change over time.