How do I practice sunk cost trap commitments?

The most direct way to practice sunk cost trap commitments is through a focused exercise: Identify one commitment you are currently maintaining primarily because of what you have already invested in it — time, money, reputation, emotional energy. Write down two lists side by side. List A: everything you have already put into this commitment (the sunk costs). List B: what continuing this commitment will realistically produce in the next 6 months, assuming the same trajectory. Now cover List A with your hand and read only List B. If a stranger saw only List B, with no knowledge of your history, would they advise you to start this commitment today? If the answer is no, the sunk cost is the only thing holding you in. Name that honestly.

Common pitfall: Overcorrecting into premature abandonment — using 'sunk cost fallacy' as an intellectual excuse to bail on commitments the moment they get difficult. Not every hard stretch is a sunk cost trap. Some commitments require sustained investment through discomfort before they pay off. The failure mode is learning the phrase 'sunk cost fallacy' and then wielding it as a rationalization to quit anything that demands patience. The real skill is distinguishing between a commitment that is genuinely dead and one that is merely in its difficult middle.

This practice connects to Phase 34 (Commitment Architecture) — building it as a repeatable habit compounds over time.