3. Blake bought into a stock mutual fund as a retirement investment six months ago. Since then, he has watched the prices slowly drop each month. He realizes that there are periodic downturns in the market, and this retirement investment is not something he will tap for close to 40 years, but he is afraid that his investment will soon be worthless.

He is tempted to cash in the stock and move what funds are left to another instrument.

What advice would you give him?