Dr Nik Eberl is the founder and executive chair: The Future of Jobs Summit™ (Official T20 Side Event). He is also the author of Nation of Champions: How South Africa won the World Cup of Destination Branding).

What is South Africa's most valuable national asset? Many would point to our mineral wealth, our entrepreneurial spirit, our strategic location, or our abundant natural resources. Others would argue it is our Constitution, our financial institutions or the resilience of our people.

All are important. But there is another asset—one that cannot be mined, taxed or measured on a balance sheet. It is the invisible force that determines whether nations rise or decline. That asset is collective belief.

The world's most successful nations are not simply those with the strongest economies or the richest natural resources. They are societies where people share a belief in a common future; where citizens trust one another enough to cooperate, entrepreneurs believe opportunity exists, investors have confidence to commit capital, and young people believe tomorrow can be better than today. Nations run on confidence long before they run on capital.

As we mark Mandela Month, it is worth asking whether South Africa's greatest challenge is not only economic or political, but psychological. Have we stopped believing? Recent public debates around immigration, crime, unemployment and economic inequality reveal a country under immense strain. These are real challenges that require serious policy responses and honest public debate.