The famous ancient Greek political orator Demosthenes said, "A man hopes for what he believes." This statement is actually saying that humans not only deceive and deny themselves out of fear of pain but are also born with an innate tendency towards excessive optimism. This principle also applies to investing. Many people think they are "analyzing the company," but in fact, often they first have the desire to make this money and then find reasons to justify that desire. Being optimistic about a company is normal; but once this "optimism" turns into "it will most likely definitely rise," excessive optimism begins to take over judgment...