There are two types of greed in the market:

One is setting the selling point too high when holding positions;

The other is setting the buying point too low when being out of positions.

There are also two types of fear in the market:

One is selling when one should buy, being washed out by market makers, fearing to miss the low point;

The other is buying when one should sell, being washed in by market makers, fearing to miss the upward movement.