It's a bit optomistic (sic) to assume 10% growth per year, but the concept is hugely important. I started with no inheritance and managed to retire comfortably by saving, investing and taking some calculated risks along the way.
NO, it is NOT "optomistic."
1. The long-term growth of the stock market is ~10% per year.
2. I have invested in apartments and development of houses, condos, apartments and an industrial building through the year and achieved far more than 10%.
3. During a five year period, just after Fidelity Select Electronics went through $126 per share, I thought it looked peaky and sold all of it and bought Fidelity Real Estate (FRESX). That earned in excess of 20% annually for the next four or five years. I was too *smart* to invest more than $100,000 or $200,000 in it, because you're supposed to diversify.
4. Years later I put a million into Fisher Investments. Then they had a model portfolio of 80 stocks and ETFs. I said "that's too many." They replied "HOw many do you want?"
Me: 50
Fisher: "We won't go below 60."
Fine, it was 60.
In the year that followed,, my portfolio of 60 outperformed their model of 80.
I said "Ken, you're over your model in Japan Fund and it's going nowhere. You have zero Brazil Fund and it's killing! He did nothing. Had he listened to me, his clients would have made millions more.
I read the WSJ which recommended devesting from companies which are heavily invested in terrorist sponsoring nations, such as Total SA Fina (TOT), in Sudan at that time.
Fisher said "NO, we don't want to negatively impact our clients."
I replied "SELL MY TOT!" Had to sign a statement claiming this might harm my return.
They sold all my TOT and replaced it with BHP.
In the following year or two, TOT was up 20% annually. Look it up.
But BHP was up 40% or more! That paid for all the gasoline I would ever buy for the rest of my life. Fisher's clients would have made millions from this one suggestion, but NOOOOOOOO.
I withdrew my funds as I was outperforming Fisher with my remaining investment accounts, such as our family trust and my wife's retirement SEP/IRA and Roth IRA. Besides, Fisher charges 1.5% annually regardless of how much you gain or lose.