Giving based on gross or net?

II Corinthians 9:6 “Remember this:  Whoever sows sparingly will also reap sparingly, and whoever sows generously will also reap generously.” Is donating time, talent and treasure a sensitive, conscience tingling action?  Should you and I donate 10% based on our net income or gross income?  Another question:  Does God bless you and me based on our width or on our height?  Answer: God blesses us based on His love.  Our giving is the same.  Giving is not a % thing;  giving is based on the heart and love and appreciation.  Don’t you do the same with your own children?  Giving is not a matter of financial calculation of the brain—-Giving is always a matter of 1 organ–the heart.