Our hearts become hard when we allow sin to build up with in them. In Ezekiel the Lord says that He will remove the hearts of stone and give a heart of flesh. Hearts that are soft are able to feel the presence of God and release His love to those around them. In our culture where we are challenged daily to prove ourselves, it creates more frustration that can only lead to a hard heart. Which in turn keep us from fulfilling the purpose that God has for us. Our hearts should be soft and pliable in the hands of our Creator so that we can walk in the purpose that He has for us.