Sacrifice gives no pain...

In order to relieve the hunger of others, we must forget our own hunger.

Bowl of Saki, by Hazrat Inayat Khan
Commentary by Pir-o-Murshid Inayat Khan:

Riches and power may vanish because they are outside of us, but only that which is within can we call our own. In order to awaken love and sympathy in our hearts, sacrifices must be made. We must forget our own troubles in order to sympathize with the troubles of others.

To relieve the hunger of others we must forget our own hunger. Everybody is working for selfish ends, not caring about others, and this alone has brought about the misery in the world today. When the world is evolving from imperfection towards perfection, it needs all love and sympathy. Great tenderness and watchfulness is required of each one of us. The heart of every man, both good and bad, is the abode of God, and care should be taken never to wound anybody by word or act. We are only here in this world for a short time; many have been here before, and have passed on, and it is for us to see that we leave behind an impression of good.

There are however blessed souls, souls who are really satisfied and whose hunger is stilled by seeing another person eating or who are happy seeing another person adorned with beautiful clothes. It might seem to us a great renunciation or self-denial; but they have been given a cross to bear and have risen above it. Sacrifice gives no pain; it only gives pleasure.

Love another and do not depend upon his love; and: Do good to another and do not depend upon receiving good from him; serve another and do not look for service from him. All you do for another out of your love and kindness, you should think that you do, not to that person, but to God. And if the person returns love for love, goodness for goodness, service for service, so much the better. If he does not return it, then pity him for what he loses; for his gain is much less than his loss.