Alex Hamilton's phone call changed my life

This is a story of human spirit,human bonds, love kindness and generosity...They say you are among the blessed people of God,when in your heart surges a sea of kindness and love,you desire to love & help every person around you....how does this sea come to be?..Khalil Gibran said 'generosity is giving you what i need more than you do',but why does man practice generosity at all in the first place