Investment Philosophy 101: What Investment Means to Me (revisited)

Refreshed 13 Jul 2026 — original published 3 Sep, 2023

I wrote on my personal investment philosophy 3 years ago and I think now is as good a time to revisit it. With all the noise in the market, how do we act?

But why is a philosophy important? A philosophy gives clarity on how to act. A philosophy empowers us to control what we can control: our decisions. It narrows an infinite field of possibilities down to what matters, and that alone tends to produce better decisions.

My philosophy, in one line: investment is a long-term play, and investors are rewarded for discipline and commitment over time.

That belief is grounded in data, not sentiment. Past performance does not guarantee future performance. So why the long-term view?

Why do markets exist?

The first question to answer is why markets exist. A market is a collection of companies, all working to create value in order to win a share of clients. Each firm solves a problem for its customers; customers pay for the value they receive; and when companies earn, so do their shareholders. The cycle repeats. A market, at its core, is a value-creating machine.

Not every company survives that process. The landscape is full of fallen angels, also-rans, and companies that never really started. In fact, more often than not, companies fail. But winners, though far fewer in numbers, create more value than losers destroy [1],[2]. Thus the market as a whole presses on and it keeps growing. Staying invested over time is how we participate in that growth.

Winners, though far fewer in numbers, create more value than losers destroy

Because companies rise and fall, and because investors interpret information differently, markets are volatile by nature. Prices move minute by minute. Uncertainty never fully clears at any single moment.

Over time, though, value continues to be created and creators are rewarded. Investors as a result get rewarded. And historically, the data shows that, over sufficiently long periods, the outcomes tends to be positive. This is why, historically, staying disciplined and staying invested for the long run tends to be rewarded. The data favours patience over prediction.

Timing the market carries its own risk. Historically, missing just a handful of the market's best days has reduced long-term returns significantly, which is part of why the discipline is to stay invested throughout, rather than try to step in and out at the right moments.

So how does this philosophy guide us?

If we take the data seriously, we hold our investments through the calm and through the storm. Every investment journey will, at some point, run into events beyond our control — and those events can produce real grief and anxiety. Poor decisions made under that stress often do more damage than the event itself.

So how do we get the best possible outcome?

Ultimately, staying invested requires being able to survive the journey. On the practical side, it means keeping enough savings on hand that we are never forced to lean on the portfolio to fund daily life. It means getting the basics right — budgeting, an emergency fund — so the investment has room to do its work. On the strategy side, because we don't know who the survivors will be, it's better to be genuinely diversified, across asset classes and instruments. Historically, that combination is what has worked, given enough time.

I am often asked: "What if the market doesn't recover for decades?" It's a fair comment, and not one I dismiss. But consider what that scenario would actually require: companies failing to create anything of value for decades, meaning no one is spending, meaning the broader economy has effectively stopped functioning. At that point we are no longer talking about portfolio returns — we are talking about a return to barter. If that happens, losses would be the least of your concern. Survival would be more critical.

Survive. The necessary condition for success

The resultant question is simple: can you hold this investment long enough to allow the portfolio to do its work? Stay focused on the parts of life you can control directly — your work, your habits, your life. Give your money time to do what markets, historically, have tended to do. Grow.

Stay patient. Stay invested.

---

I write on topics related to financial habits and decisions. Do explore my other articles at https://www.williamseah.com/blog if the ideas resonate. Drop me an email at reach.william@gmail.com or text me at 9673 1523 if you'd like to chat over coffee or whisky.

References

[1] I wrote a longer post based on a book by Freeman-Shor that explores the idea that "few extraordinary winners are blended with the great number of losers" https://www.williamseah.com/post/outliers-and-distinction

[2] Just as I was writing this, Straits Times published an article. Great minds think alike.

The hottest stock markets lead to the biggest losses, 10 Jul 2026.

https://www.straitstimes.com/business/invest/the-hottest-stock-markets-lead-to-the-biggest-losses