4 ideas
A security has no memory of your purchase price, your hopes, or your loyalty, so any attachment to it is purely a feature of the owner's psychology. Investors who anchor on what they paid, or who treat a holding as part of their identity, make decisions based on a relationship that exists only on their side.
Because trading constantly tests how a person handles fear, greed, and being wrong, it exposes character flaws that ordinary life lets people hide. An investor who hasn't worked out their own temperament and motives before entering the market will learn them through losses, so self-knowledge is a precondition for strategy, not an afterthought.
Prices in the short run are set less by underlying value than by what participants expect other participants to think, similar to a beauty contest judged by guessing the popular choice. The practical skill therefore becomes reading shifts in collective mood and positioning rather than calculating intrinsic worth.
Many participants play the market for the excitement, status, and sense of identity it provides rather than purely for returns, and that motive distorts their behavior. Recognizing that the activity satisfies psychological needs explains why rational people overtrade, chase fashions, and stay in losing positions long after the economics stop making sense.