Rosy Retrospection
Rosy Retrospection refers to the human propensity for remembering (or even exaggerating) the positives from past events and minimizing the negatives. Although this effect appears the strongest with events that were only moderately pleasant at the time, it is explained as the result of the memories of the minor annoyances associated with it fading away much more quickly than the positive memories. An example of this could be a memory of a picnic or fishing trip where you remember the people you were with and the fun you had while tending to forget negatives such as heat, flies, mosquitoes, discomfort, etc.