The past is what it is, let the past stay where it belongs. No amount of whining, moaning or pity parties can change the past from what it is.
You know you are exaggerating your past when you find yourself reverting to the "past mode". The past mode features phrases such as "Had I known", Only if I had gotten there on time", "Maybe I was not careful enough", "I am not that smart anyway".
It becomes more serious if you throw momentary pity parties to justify these moments. The pity parties then become more frequent and the guest lists become longer.
If you find that you have - regrets, deep sorrow of the heart, emotional eating, lack of energy, negative perspectives toward the future... etc. on your guest list, then you are really exaggerating your past and welcoming more special guests in upcoming parties.
These special guests totally crowd your thoughts so much so that you weep spontaneously, lose touch with your sense of being and you are told to seek professional help.
You do not have influence over your past, but you sure have influence over your response to it.
Quit exaggerating your past!