This document contains the individual journal of Tang Ju Yi, a student with student ID 0317735 studying psychology in the Foundation in Natural and Built Environment program in February 2014. Over the course of 10 journal entries, Tang Ju Yi reflects on various cognitive biases and psychological phenomena discussed in class, relating them to personal experiences from their childhood, schooling, and group projects. Examples discussed include confirmation bias, extrinsic/intrinsic motivation, illusion of control, post-decision dissonance, counterfactual thinking, self-serving bias, optimistic bias, self-efficacy, halo effect, and observational learning.