I normally don't write out my reviews, but I feel like I need to because the information in this book is misleading.
The asset the author is recommending is whole life insurance. There are cases where this product may make sense for some people, but he does not once mention that this is what he's endorsing in plain language. He does not discuss the fees and high premiums associated with these plans, nor does he list any specific details about the terms of the contracts themselves. Additionally, the book seems severely lacking on any credible sources for the information it provides.
The author goes through great lengths to make returns from the S&P 500 seem far inferior to the guaranteed 4% return of a whole life insurance plan. On pages 38-39 he specifically picked a timeframe (1998-2016) that included two major recessions in '00 and '07-'08, compared returns using TWRR instead of MWRR (ignoring an investor making constant contributions), factors in 15% taxes (which do not affect returns in a retirement account), and adds a 2% fee to track the index (current fees are around 0.03%). This results in him giving the S&P 500 a "real annualized return" of 2.94% when in reality it was around 7.68% in that timeframe (you can backtest this on portfoliovisualizer.com). He does all this without addressing the effects of fees on the returns from the life insurance policy, or the dividends that can be reinvested that the S&P 500 distributes.
The main advantage of mutually owned life insurance policies (as the author points out) is the ability to take a collateralized loan out of the plan while continuing to earn a 4% return on the full principle amount (you borrow money from the company, not your own balance). This allows you to obtain leverage with a low effective interest rate which is a really useful tool. However, he then implies that this should be done to invest in a higher return investment such as starting a business or investing in real estate. While this can absolutely generate attractive returns, it can also backfire. Since your investments are no longer diversified it is much worse if they don't work out. You are also adding to your loses through leverage with an interest rate on your loan that is also compounding. It is by no means a guaranteed win or risk-free to do something like this.
My concern was increased when following up on the author's business: Better Wealth Solutions. From what I can tell, no financial instruments are being sold by the company; only books, classes, etc to teach his strategy to others. My first thought in these situations is to wonder why someone who has figured out a way the crush the market is spending time selling books and classes rather than relaxing retired on a beach somewhere. I am not necessarily implying his motives are insincere, but it seems suspicious.
There are undoubtedly advantages for some people to use a plan like this as part of their overall investment strategy, but I can not endorse a book that does not explain the facts in a clear light. A vast majority of people would be better served by investing in a low cost broad based index fund in a tax advantaged retirement account, and to use other instruments for liquidity when needed.