This project consists of secondary analyses of 5 datasets. The data used in the analyses, syntax, and output can be found in each study subfolder; further details of studies are below: Study 1 (in preregistration): Longitudinal study of individuals transitioning to a vegetarian or vegan diet. Full study details, measures, etc. can be found at: https://osf.io/bhksj/?view_only=f96dfaabf5ca43b5bc1ec6e1c93eaf96 Study 2 (in preregistration; labeled Study 1 in the manuscript): This was a semester-long study of undergraduate students' goal pursuit. All questionnaires can be found in the Study 2 folder. Study 3 (in preregistration; labeled Study 2 in the manuscript): This was a study of goal pursuit and self-regulation using ESM methodology and two follow-ups (at 1 month and 3 months after baseline). Full study details, measures, etc. can be found at https://osf.io/2u4w3/?view_only=4fe0f083a1f04773aff83db31fd742ba Studies 4a and 4b (in preregistration; labeled Studies 3a and 3b in the manuscript): The focus of these experiments was to examine the effectiveness of setting precise (e.g., 2.923 kg) versus round (e.g., 3.000 kg) weight loss goals on weight loss success. Further details can be found here: https://osf.io/mdkhx/?view_only=d737b4f0360046948bbe56b4805fa2dd and https://osf.io/aj78d/?view_only=23190c5f89924d3a89a7601594a77574