To let go of those past memories you still resist, you need to develop compassion for the people you perceive as enemies. Realize that these people simply had a different perspective on life; forgive them and let them be.
To release our attachments to the past, we need to relinquish the sense of duality. Let go of what is undesirable by forgiving yourself.
Master of illusions
When we perceive negative events or situations in the outside world, we should neither react to nor resist them, but instead see them clearly for what they are. Reacting or resisting them engages the ego. We need to be in a non-reactive state of mind and become the master of illusions.
Our mental perceptions that we perceive with our intellect are only an illusion. It is then up to us whether we consider these mental images as empowering or disempowering. When we react to these perceptions, we allow them to unfold.
You see the event, you don't resist it, but you also recognize its falsity. If you perceive judgment from others, it's because you've internally felt judged before. You felt inferior and still perceive others as separate from yourself. Therefore, you perceive this event of being judged by others because your self has felt that internally, from being to becoming: "I AM judged."
Once it's reflected externally as an event, you don't engage with it negatively, making it real. You don't try to change yourself or others, or feel sorry for yourself or others. You make no effort to address the problem.
If you try to control the situation and engage your ego, you may perceive the ego's projections of guilt, anger, and resentment as effects in the outer world. There is only one will, one state of mind.
If you perceive judgment from others, you might feel anger or resentment toward them, which can turn into attachment—in other words, a belief in separation.
What we perceive as real is what we experience and remember. We must first intellectually understand ourselves and then experience and feel this understanding from our own unique perspective.
Unfortunately, internal resistance to self-acceptance creates inner conflict and self-distrust, hindering the revelation of our true selves.