Peter Drucker defined what contribution is.
Hum...my role in this world is to contribute to the marketplace: they
are seekers at the church, friends and co-workers who are in trouble,
deprived communities in the society.
That is why you will find there are quite a number of "I" in my
conversations because I cannot just talk loud on sacrifice but not
begin this from myself.
Jesus said in the Bible, "why do you call me, 'Lord, Lord', and do not
do what I say? I will show you what he is like who comes to me and
hears my words and puts them into practice."
Quoted from Mark 7:46-47
He is the great example!!! I would love to follow!