This could include employing dollar-cost averagingor automatically rebalancing your portfolio when particular asset classes gain or lose value in comparison to others.
Dollarcostaveraging gradually adds to or removes from an investment, ensuring that you never purchase your full position at a high or sell it at its low.
Dollar-cost averaging forces us to do what doesn't come naturally, or as Mr. Malkiel puts it, "exactly what our emotions tell us not to do" buy more shares when prices are low and fewer when prices are high.