Magnification and Minimisation

This distortion inflates the importance of negative things (your mistakes, others' achievements) and shrinks the importance of positive things (your strengths, others' flaws).

Example: You dwell on the one question you got wrong on an exam while barely registering the thirty you got right. You view your colleague's promotion as a massive achievement while dismissing your own accomplishments as trivial.

The combined effect is a world where your failings are enormous and your successes are invisible.