It may be helpful to think through your intended holding period.
As a companion to the sibling comment recommending the Intelligent Investor (realize that index funds didn't exist when Graham wrote that), I'd keep in mind the mantra, "price is what you pay, value is what you get".
If the holding-period is decades, there are good arguments in favor of stocks/index funds. Shorter-term than that, it may be difficult to provide guidance with any real certainty.
As a companion to the sibling comment recommending the Intelligent Investor (realize that index funds didn't exist when Graham wrote that), I'd keep in mind the mantra, "price is what you pay, value is what you get".
If the holding-period is decades, there are good arguments in favor of stocks/index funds. Shorter-term than that, it may be difficult to provide guidance with any real certainty.