• Joy and Dan Flynn credit their 54-year marriage to simplicity and daily gratitude. • The couple chose not to have children or pets, focusing on shared activities and support. • They stay active with sports, community work, and mentoring, emphasizing gratitude and joy.

Joy and Dan Flynn celebrated their 54-year anniversary on November 20. Having spent more than half a century together, the couple says their marriage works because they have kept life simple.

The three keys to their success? No kids, no pets, and leading a life full of gratitude for one another.

"Every day we're grateful for what we have," Dan told Business Insider's Sarah Andersen, who followed the athletic couple in August as they trained together for their next round of competitions, including the upcoming World C

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