Our inner beliefs about ourselves is largely shaped by the earliest relationships we have with other humans — our parents. Our interactions with our caregivers help us learn who we are.
These interactions shape our internal schemas about ourselves. And because you believe that your parents are always right when you are young, you also believe everything they tell you about yourself.
If your parents invalidated you, then you tend to invalidate yourself. If your parent criticized you, then you developed a critical inner voice.
Read more on themighty.com