Most of our parents did the best that they could, but some had little awareness of proper parenting skills. As a result we may have been neglected, criticized, invalidated, or even abused.
Early experiences can affect us as adults. Negative feelings that arise as a result of these experiences, if not processed, can get stored up in our psyches and carried into our current relationships.
None of us can change the past. We can however, heal ourselves and move forward: We can forgive, forget, and break the chain, so that what happened in the past does not follow us into the present.