Other people are not here to fulfill our needs or meet our expectations, nor will they always treat us well. Failure to accept this will generate feelings of anger and resentment. Peace of mind comes with taking people as they are and emphasizing the positive.
Even if you forget that´s not the same as if it never happened. The slate is not entirely wiped clean; you can´t reclaim the person you were beforehand; your state of innocence is not there to be retrieved.
The experience you’ve had may be unwanted, may amount to nothing but damage and waste, but experience has substance, is factual, authoritative, lives on in your past and affects your present, whatever you attempt to do about it.
Every shrink knows that it’s not the event itself but how you respond to it that tells the story. Take ten assorted individuals, expose them all to the same life trial, and they will each suffuse it with exquisite personal detail and meaning.