FINANCIAL FRESHMAN #070
TL;DR → Scott Trench’s book “Set For Life” outlines 7 tenets of FIRE investing. Some of these tenets are immensely valuable even if you don’t intend to retire early, such as refraining from ever spending your principal balances and understanding the difference between risk and volatility.
FIRE Recap
For the last two weeks on this blog, we’ve talked about the “financial independence, retire early” movement. First, we looked at the rise of FIRE influencers on social media and how their content can shape (and sometimes distort) your mindset about what financial independence really means. Then, we zoomed out to focus on the foundational habits shared by those who successfully retire early.
Even if you haven’t read either post, you likely understand the basic formula to get to an early retirement. During your earning years, you make sacrifices so you can build a nest egg large enough to one day leave your 9–5. Simple in theory.
But simple doesn’t always mean easy. If you’re fortunate enough to reach your 30s with a growing nest egg, the next challenge is learning how to protect and grow it. That’s what I’d like to talk about this week—how to invest for financial independence.
Set For Life
Lucky for us, Scott Trench’s best selling book Set For Life has already laid the groundwork. This is a book we have always recommended heavily, mostly because the teachings within it are incredibly actionable for the average person. Chapter 9, titled An Introduction to Investing for Early Financial Freedom will be the focus of today, as Trench uses this chapter to introduce his Seven Core Tenets of Investing. You can find a summary of the seven below, and I’ll add some college student-centric dialogue in the paragraphs to follow.
Tenet #1: Never Spend the Principal
Think of your principal as the goose that lays your golden eggs. If you get rid of the goose, the eggs stop coming. Whether you have $500 in an index fund or $5,000 in a Roth IRA, protect your core investment. The goal is to live off the returns, not the base you have built.
In practical terms, that means resisting the urge to dip into your investments when you want something new. Once your money is invested, it’s going to work for you each and every day. Even if your starting amount feels small, treat that principal like something sacred. Protect it, grow it, and position it to keep producing eggs for the rest of your financial life.
Tenet #2: Reinvest Most Investment Returns
Reinvesting is the secret ingredient behind compounding. When your investments earn dividends or grow, putting those returns right back into your portfolio accelerates your progress without requiring more effort. It allows your money to keep working and building on itself, creating momentum that grows stronger over time.
For college students, this habit starts small. Maybe it is leaving your dividends alone in your investment account instead of transferring them to checking. Every time you reinvest, your money starts earning more money, and that quiet consistency is what transforms small balances into long-term wealth.
Tenet #3: To Invest, One Must Have Capital
Before you can invest, you need something to invest. Trench humorously points out that many people who call themselves “investors” are actually investing with other people’s money. Normal people don’t have that luxury. Your first step is to build your own capital so you can actually participate in the game.
For college students, this means building the habit of saving, no matter how small. Setting aside $20 from a weekend shift or putting birthday money into a high-yield savings account may not feel like much, but it trains the right financial muscles. The goal is not the perfect investment, but creating the capital to start investing.
Tenet #4: Effort Correlates with Return Only If You Are in Control of the Investment
This tenet highlights the absurdity of stock picking, which is something we’ve covered on this blog in great detail. You are obviously not in control of the stock performance of any company you select, no matter how hard you may try to be.
Trench highlights that there are investments out there, such as in real estate, where effort and return do correlate. For the most part however, Trench is an advocate of low cost index funds. No picking needed, and also incredibly low-effort.
Tenet #5: Investment Returns Are Impacted by Knowledge
The more you understand your investments, the better decisions you can make. Trench highlights that knowledge does not guarantee higher returns, but it does reduce mistakes and help you avoid unnecessary risk. Understanding how rental properties work, for example, helps you anticipate maintenance costs, tenant issues, and future market trends.
For college students, this tenet is about learning early. Reading, asking questions, and gaining experience with small investments builds a foundation that will pay off later. Knowledge compounds just like money. The more you know, the more confident you become, and the better your returns are likely to be over time.
Tenet #6: Do Not Confuse Volatility with Risk
A common misconception is that stocks are riskier than bonds. They are not riskier, but they are more volatile, and Trench goes on to teach us the difference. Volatility is when the value of an investment moves up and down. Risk is the chance you permanently lose money.
For college students, the lesson is to stay calm when investments fluctuate. Market ups and downs are normal and expected. The real risk is not investing at all or making emotional decisions that derail your progress. Especially since we plan to never spend the principal, we can certainly afford to weather some volatile storms.
Tenet #7: The Best Investments Are Specific to the Investor’s Personal Situation
Trench outlines one line of thinking in this tenet that is incredibly powerful—if you want to retire early, the best investments are the ones that reduce your monthly expenses. Maybe you swap your home to LED bulbs that use less electricity, or buy a bike to save money on gas.
He also highlights the tax-advantaged nature of this reality. If you save one dollar instead of earn additional one, you actually get to keep the whole thing. Prior to investing in anything, you should take stock in your personal situation. Per your budget, do you have any expenses that could be trimmed out?
Final Thoughts on FIRE
Investing for financial independence is less about chasing the hottest stock, and more about protecting your principal, building capital, and making decisions that fit your specific situation. These seven tenets show that a disciplined, informed, and personalized approach works better than hype or shortcuts.
For college students, the lesson is simple. Start small, focus on habits you can control, and make your money work for you over time.
