Behavioral Investing Mistakes

Loss aversion means people feel the pain of a loss roughly twice as intensely as the pleasure of an equivalent gain. This is why investors often sell winning investments too early (to 'lock in' the good feeling) and hold losing investments too long (to avoid 'realizing' the bad feeling) — the exact opposite of a sound strategy, which should judge each position on its future prospects, not its past cost.

Recency bias makes people extrapolate recent performance forward: a fund that did well for two years suddenly looks like the obvious choice, and a market that's fallen for a few months starts to feel permanently broken. In reality, chasing recent top-performing funds is a well-documented way to underperform, since strong recent performance is often followed by reversion, not continuation.

Panic-selling during downturns is the single most quantifiable way retail investors damage their own long-term returns. Studies consistently show that the average investor earns meaningfully less than the funds they're invested in, almost entirely because of poorly timed entries and exits driven by fear and greed rather than plan.

The practical defense against all of this is mostly structural, not willpower-based: automate investments (SIPs) so they continue regardless of mood, set an asset allocation in advance and rebalance on a schedule rather than a feeling, and write down your reason for holding an investment before you buy it — so a future decision to sell can be checked against your original logic instead of the market's current mood.