Practice sitting with uncertainty without resolving it

Deliberately leave a question unanswered for a set period, as a tolerance-building exercise.

Why it works

Intolerance of uncertainty is identified as a central maintenance mechanism in GAD: the worry is driven not just by the content of the fear but by the impossibility of knowing the outcome for certain. Tolerance practice builds the capacity to remain functional in the presence of unresolved uncertainty, reducing the demand for the impossible certainty that fuels the worry cycle.

How to do it

1. Identify a question you are trying to resolve through worry: "Will I get the job? Is my partner okay? Will this work out?"
2. Deliberately choose not to seek reassurance or check for new information for one hour.
3. Sit with the "I don’t know" and notice what happens to the anxiety over that hour.

Evidence

Intolerance of uncertainty (IU) is one of the most studied transdiagnostic variables in anxiety research, consistently predicting worry and GAD severity across many studies. Interventions targeting IU specifically have shown reductions in worry and GAD symptoms. (rct)

IU as a target has research support; the specific tolerance-building exercise format is a clinical application of the theory rather than the exact procedure trialed.

Sources

• Dugas, Gagnon, Ladouceur & Freeston (1998), generalized anxiety disorder: a preliminary test of a conceptual model, Behaviour Research and Therapy

Common mistake

Using distraction rather than tolerating — filling the hour with activity to avoid sitting with the uncertainty, which builds avoidance rather than tolerance.