One popular way to design your own personal glide path is by your age. I’ve seen “Bond percentage = Age,” I’ve seen “Bond percentage = Age- 10,” and I’ve even seen “Bond percentage = Age – 20.”
The asset allocation should be determined not by your age, but by how far you are from retirement. So someone who is ten years out from retirement will have the same portfolio, whether they are 40 or 60.
Perhaps the whole dogma that you should take less risk as you go along is wrong. Perhaps it is reasonable to hold the same asset allocation your entire life. You determined early on what you could tolerate as far as volatility and you just stuck with it.