So many of us enable and help others and then we feel that we have not been thanked. We say that person is ungrateful.

Swami Sivananda said that one should help those people, who do not even know that they have benefitted from our help.

Quotes from Tirukkural

A good turn done is a heaven-born gift you cherish
Ask will he repay it? And it will perish.

To help without thinking, ‘What is in it for me?’
Is to be for the helped one, vaster than the sea.

I cannot add to this, but we can change ourselves and learn to assist others.

Aim Hrim Klim