The Track Your Mood Project is an ESM study conducted by Dominique Maciejewski, Merlijn Olthof, and Andrea Bunge (Radboud University Nijmegen, the Netherlands). The two main aims were: 1) Study the effect of micro-interventions during periods of affective (in)stability 2) Study the within-person and between-person associations between events, emotions and emotion regulation in daily life On this page you can find the pre-registration of the project with the description of the aims and study design. Moreover, the individual papers will be uploaded here as well. Note that due to time constraints, the pre-registration was uploaded after data collection was completed (i.e., it refers technically to a **post**-registration). Future plans include to translate the materials into English (the study was conducted in the Netherlands). For more information, please contact Dominique Maciejewski (d.f.maciejewski@tilburguniversity.edu) or Merlijn Olthof (merlijn.olthof@ru.nl).