"The right response to a fall in the price of one asset class is never to panic and sell out. Rather, you need the long-term discipline and personal fortitude to buy more. Remember: The lower stock prices go, the better the bargains if you are truly a long-term investor. Sharp market declines may make rebalancing appear a frustrating "way to lose even more money." But in the long run, investors who rebalance their portfolios in a disciplined way are well rewarded."