Most therapeutic (rather than pharmaceutical) approaches to treating anxiety that have a long-term impact, require you to focus on (or at least acknowledge) the stressful stimuli repeatedly in the short term:

• https://en.wikipedia.org/wiki/Cognitive_behavioral_therapy requires that you focus on stressful thoughts to "pick them apart."

• https://en.wikipedia.org/wiki/Exposure_therapy requires that you experience a stress-trigger and "pass through" the initial phobic reaction to get to the point where you can neutrally observe that the stimuli isn't dangerous.

In the longer term perhaps? You could say psychotherapy reduces stress and anxiety but not necessarily during...