Reappraisal (changing the meaning we give to experiences) has been repeatedly shown to be one of the most effective ways we have to regulate our emotions.  It's one of the star components of effective emotion-regulation, coping-skill toolkits ... and it's important to realise that these toolkits can be very helpful (De Castella, 2017).  Reappraisal is important across a variety of difficult states ... depression (Cheng, 2017), anxiety (Goldin, 2017), anger, interpersonal conflict, minor hassles (Richardson, 2017), and major life difficulties.