CNBC's Jim Cramer said part-time investors shouldn't make themselves crazy aiming for perfection. "You don't need to be perfect at managing your money, you just need to be good enough, and that means you shouldn't waste your time trying to anticipate every little gyration in the market," he said. To Cramer, short-term trading isn't the best way for most at-home investors to make money. He suggested that investors continue to carefully research every stock in their portfolio so they know exactly what they own. But Cramer stressed that investors should never discount the power of an index fund, as it's a relatively easy way to make money.

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Persons: CNBC's Jim Cramer, shouldn't, Jimmy Chill, Cramer, it's