In 2005, about 450 sheep jumped to their death, as reported by USA Today. One sheep jumped to its death. Hundreds more followed. Shocked shepherds watched as 1,500 others followed.

As ridiculous as it may sound, it happens every day on Wall Street.

Traders and investors don’t look before they jump. They just think every one else must know something they don’t, dive, and lose money in the process. The rationale is simple. It’s unlikely that such a large group of people can be so wrong. But they oftentimes are wrong. In fact, the herd is so incensed with doing what every one else is doing that many forget to think individually.

So how should an investor avoid this mentality?

Do your own homework

Some of us are stuck on “auto pilot,” trained to buy or sell because others are. Do your own homework. Examine the trends. Understand why an investment may be under accumulation, or begin sold. Ask questions. Make your own decisions.

Remove all emotion from your investments

As bullish as we may be with the markets, I know there are downside risks. All investments have downside risks. If you can remove the emotional element behind your investment, you stand to do better over the long-term. If you’re watching every wiggle or sell-off in a stock every second of the day, you’re allowing emotion to dictate.

Understand your Personal Finances

Define your risk. If you can’t afford to lose $50,000 on an investment, don’t invest $50,000 on n investment. Set your boundaries, and never risk more than you can afford to lose on anything. As yourself these four questions: What are my goals? What can make an investment unsafe or a speculative gamble for me? Am I an investor or a trader? What kind of money can I reasonably spend a month investing? What are my other financial obligations?