Practice flexible optimism, not blind optimism

Choose optimism where the cost of error is low, and sober realism where the stakes are high.

Why it works

Optimism is not always adaptive; in high-stakes, low-margin situations, clear-eyed pessimism prevents costly errors. Seligman’s "flexible optimism" treats explanatory style as a tool to deploy by context rather than a personality to maximize — using optimism to persist and pessimism to assess risk, depending on what the situation actually demands.

How to do it

1. Before deciding how to frame a situation, ask: "What does failure cost here?"
2. If the cost of error is low, lean optimistic to sustain effort.
3. If the cost is high or irreversible, switch on sober assessment before you act.

Evidence

Seligman explicitly argues for flexible optimism and notes that defensive pessimism can be adaptive in some people and contexts — a position supported by Norem and Cantor’s research on defensive pessimism as a functional strategy. (observational)

Judging "what failure costs" is itself a skill; the framework gives a rule of thumb, not a precise formula.

Sources

• Seligman, Learned Optimism (flexible optimism); Norem & Cantor, defensive pessimism research

Common mistake

Treating optimism as a virtue to apply everywhere, including before consequential, irreversible decisions where realistic risk assessment matters more than positivity.