He spends a big chunk of the book on how to make sure you dont run out of $$$
He talks about a variety of different tools / approaches and suggests people investigate what works for them, but talks about annuities or IIRC reverse mortgages.
Another approach is saving enough early that you reach a point where you don't have to aggressively save. At that point you can let compound interest work for you and dont need to save much, if any, thus allowing you more available money to spend on kids, experiences, etc while still being years away from retiring. This has been the approach my wife and I have chosen to take.
This guy has a lot of good education on that approach: