Decentering is thought to be protective against a range of psychological symptoms, but little is known about the outcomes of decentering as a momentary state in daily life. We used ecological momentary assessment (42 reports across 1 week) to examine the temporal ordering of the associations of decentering with affect, dysphoria, participant-specific idiographic symptoms, and well-being. We also hypothesized that greater decentering predicts less inertia (persistence) of each variable and weakens the association of affect with dysphoria, idiographic symptoms, and well-being. Results in 345 community participants indicated that decentering and these variables were mutually reinforcing over time and that greater decentering was associated with less inertia of negative affect and dysphoria. Decentering generally predicted reduced impact of positive and negative affect on dysphoria symptoms, but results were mixed when predicting idiographic symptoms or well-being. Clinical implications and refinements for theory on decentering are discussed.