Investing in Yourself: Your Earning Ability Is Your Greatest Asset
Introduction
When people talk about net worth, they usually think of savings accounts, real estate, or stock portfolios. Yet for most people—especially early in their working lives—their most valuable asset does not appear on any bank statement: it is their ability to generate income over the coming decades. Economists call this human capital.
Consider a 25-year-old who earns $1,500 a month. If they work until age 65, even without a single raise, they will earn more than $700,000 over their lifetime. No financial investment that person holds today comes close to that figure. Protecting and growing that asset is therefore one of the most important financial decisions you can make.
Before asking what to invest your money in, ask how much you are investing in your ability to earn it.
What Human Capital Is
The concept was developed by economist Gary Becker, who won the Nobel Prize in 1992. The core idea is that education, training, health, and experience function just like an investment: they cost time and money today, and they generate higher income in the future.
Human capital has a distinct feature: it depletes over time. At age 25, almost your entire working life lies ahead of you; at age 60, only a few years remain. That is why, as human capital diminishes, financial capital—your savings and investments—must grow to replace it.
Are You a Stock or a Bond?
Professor Moshe Milevsky proposed a useful way to think about this in his book Are You a Stock or a Bond? (2008). If your income is very stable, like that of a tenured civil servant, your human capital resembles a bond: predictable and safe. If your income fluctuates, like that of a commission-based salesperson, an entrepreneur, or someone working in a cyclical industry, your human capital looks more like a stock: it can deliver high returns, but it is volatile.
This has practical consequences:
- Someone with bond-like human capital can afford to take slightly more risk in their financial investments.
- Someone with stock-like human capital should balance it out with more stable investments and a larger emergency fund.
- It is wise not to invest heavily in the same company or industry where you work: if that company runs into trouble, you could lose your job and your savings at the same time.
Four Ways to Invest in Yourself
1. Skills and knowledge. Courses, certifications, languages, digital skills. The best investments are those that the market values and that complement what you already know. Before paying for an expensive program, ask yourself: what increase in income or opportunities can I realistically expect? Are there free or cheaper ways to learn the same thing?
2. Health. Sleeping well, staying active, eating reasonably, and caring for your mental health are not separate from personal finance. A prolonged illness is one of the biggest threats to human capital. Health and disability insurance protect this exact asset.
3. Professional network. A large share of job opportunities comes through acquaintances. Maintaining professional relationships, helping others, and participating in industry communities is a low-cost, high-return investment.
4. Reputation and experience. Doing good work, documenting achievements, and taking on projects that teach you something new increases your market value over time.
How to Evaluate an Investment in Education
Not all training is a good financial investment. A few questions to help you decide:
- What is the total cost? Include tuition, materials, and any income you give up while studying.
- How much could it increase my income? Look for real data on graduate employment rates and salaries, not the school's marketing brochure.
- How long will it take to break even? If the expected raise is $200 a month and the course costs $2,400, it pays for itself in one year.
- How will I finance it? Taking on heavy debt for a program with uncertain returns is risky.
Protecting the Asset
Just as a house is insured against fire, human capital can be protected:
- An emergency fund, to weather a period of unemployment.
- Disability insurance and, if others depend on your income, life insurance.
- Diversifying your skills, so you do not depend on a single industry or employer.
Common Mistakes
Stopping learning after graduating. Skills lose value if they are not updated.
Spending heavily on credentials without evaluating their return. An expensive degree does not guarantee higher pay.
Neglecting your health to work longer hours. In the long run, it reduces your earning capacity.
Concentrating both your job and your investments in the same company.
Failing to insure your income when other people depend on it.
Conclusion
Your ability to generate income is almost certainly your most valuable asset, and like any asset, it can be grown, diversified, and protected. This week, identify one concrete skill that would increase your value in the job market, find the most affordable way to learn it, and block out two hours a week on your calendar to get started.
References
- Becker, G. S. (1964). Human Capital: A Theoretical and Empirical Analysis, with Special Reference to Education. University of Chicago Press.
- Milevsky, M. A. (2008). Are You a Stock or a Bond? Create Your Own Pension Plan for a Secure Financial Future. FT Press.
- Ibbotson, R. G., Milevsky, M. A., Chen, P., & Zhu, K. X. (2007). Lifetime Financial Advice: Human Capital, Asset Allocation, and Insurance. CFA Institute Research Foundation.
- Granovetter, M. S. (1973). The strength of weak ties. American Journal of Sociology, 78(6), 1360-1380.