Inner peace is achieved when one is at peace with his conscience, and his conscience is at peace with the Creator and Creation.
We only have one world, one school for 7 billion people. In a world with so much selfishness, it is impossible to live in peace, if we don´t think about the consequences we may cause on others and ourselves.
Letting go doesn´t mean to stop loving, it means to stop considering that being as proper property. We aren´t holders of life, we´ll never be of anyone either.
We have fear of the unknown, the cure for such fear is knowledge. The base of most fears lies on the intensity which we hold on to its physical form not wanting to suffer at any time.