You could invest in assets that on average track inflation to get rid of this problem, this is the case for example of real estate, so if you bought several houses and you rent them out, then as inflation keeps going up, the price of your property and the rent you can charge do the same, so as long as you plan your spending you could live out of that passive income for the rest of your life, however as we know, people should plan to have more money stored as when we get older our health will begin to deteriorate, and this obviously means additional expenses.