永远不要相信小道消息，也不要相信上市公司身边朋友的内幕消息

Group 1 - The management and board members of a company often make poor judgments regarding their own stock due to their deep familiarity with the company's weaknesses and operations, which can lead to a lack of understanding of market dynamics [1] - The role of a CEO in the stock market is akin to that of a cheerleader, as they must reassure investors about the company's performance, even in the face of declining sales or profits, attributing issues to temporary factors [3] - Key investment strategy involves entering positions near critical reversal or continuation price levels, with decisions to buy or sell based on stock movements around these key levels [3][4] Group 2 - Once a stock breaks through a critical price level and begins to rise, the investor may feel more secure in holding the position, as they are aligned with market movers [4] - If the stock moves contrary to the investor's expectations after breaking a key level, immediate action to close the position is warranted [4]