When our eyes are not on God's grace; however, we find that we are less and less content. 2 Corinthians 9:8 says, "And God is able to make all grace about to you, so that having all sufficiency in all things at all times, you may abound in every good work." Through this, we learn that God's grace overflows to us so much that we should always have a sense of sufficiency and contentment.
This grace that overflows from God to us so freely should manifest in our giving freely of the abundance we have. Through this, we reflect God's heart to others.