Why: Like everyone else, you tend to project recent events into the future. These days, that doesn't feel good.
The fix: If you have a portfolio of funds, pick one day a year to check on your allocation. And then rebalance, which forces you to sell high and buy low. Hold the line the other 364 days. Or buy a target-date retirement fund - the manager picks a stock and bond mix based on your age, not recent performance. The Vanguard 2025 Fund (VTTVX), for example, has 79% of its assets in stocks.
NEXT: Performance chasing
Last updated July 24 2008: 10:17 AM ET