No one is self-sufficient. And it's not a one-way thing- -the generosity of spirit from one side provokes a response in kind from the other side.
Like humility, generosity comes from seeing that everything we have and everything we accomplish comes from God's grace and God's love for us . . . Certainly it is from experiencing this generosity of God and the generosity of those in our life that we learn gratitude and to be generous to others.