Bart gives some good examples of people who came to terms with their own insignificance, and found it liberating, a way to free yourself up to focus on people in your life, instead of some goal of being remembered 1,000 years from now. It’s the old “journey not the destination” message, but he adds quite a bit to it.
Skip to 9 minutes where the question starts
Bart is a former humanist chaplain and former famous evangelical before that. He dropped the belief stuff, but has continued to use his skills of community building.