We may have lost our ability to trust in childhood, which then created a lifetime of listening to what our mind says is true (which is mostly lies), our heart (which can make poor choices if we feel underserving of love) and our gut which we were taught at an early age not to listen to. At some point though, if we are really fortunate, we will begin to regain trust in others, ourselves, and life. We learn how to build bridges, not walls.
