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.