To build an egalitarian economy and a thriving nation in Nigeria, consider the following:

Egalitarian Economy:

1. _Progressive taxation_: Implement a fair tax system where the wealthy are taxed more.
2. _Social welfare programs_: Establish programs like healthcare, education, and unemployment benefits.
3. _Labor rights_: Enforce fair labor laws, including minimum wage and workers' protection.
4. _Cooperative ownership_: Encourage cooperative businesses and community land trusts.
5. _Reduced income inequality_: Implement policies to reduce the wealth gap.

Thriving Nation:

1. _Good governance_: Ensure transparent, accountable, and effective leadership.
2. _Education and skills development_: Invest in quality education and vocational training.
3. _Infrastructure development_: Build modern infrastructure, including roads, power, and water.
4. _Economic diversification_: Diversify the economy beyond oil exports.
5. _Innovation and entrepreneurship_: Encourage innovation, entrepreneurship, and small business growth.
6. _Security and rule of law_: Ensure safety and security, and uphold the rule of law.
7. _Environmental sustainability_: Promote sustainable practices and environmental protection.
8. _Social cohesion and inclusivity_: Foster a sense of national unity and inclusivity.
9. _Healthcare and wellness_: Invest in quality healthcare and promote wellness.
10. _International partnerships_: Foster beneficial international relationships and partnerships.

Additionally, address corruption, promote transparency, and encourage citizen participation in governance to build a thriving nation.