I am setting aside a time to do "reflection day" every year in December. I highly recommend it. Why? Because human mind tends to think more of what we lack, what we have not achieved more than all the great things that happened to us. "Negativity bias" is a term used in positive psychology field to explain how our minds are more inclined to focus on negative. In order to negate that we need to consciously look what was great about our year that we may have already forgotten.