“Give whatever you are doing and whoever you are with the gift of your attention.”

Source: The Alchemist

Source: A Return to Love: Reflections on the Principles of "A Course in Miracles" (1992), Ch. 7 : Work, §9 : Sales to Service
Context: Purity of heart will not make us poor. The exaltation of poverty as a spiritual virtue is of the ego, not the spirit. A person acting from a motivation of contribution and service rises to such a level of moral authority, that worldly success is a natural result.
Give all your gifts away in service to the world. If you want to paint, don’t wait for a grant. Paint a wall in your town that looks drab and uninviting. You never know who’s going to see that wall. Whatever it is you want to do, give it away in service to your community.

Psychomagic: The Transformative Power of Shamanic Psychotherapy (2010)
Context: I say: "What you give, you give to yourself; what you do not give, you give up." And this is to say that whatever you do in the world, you do to yourself; and whatever you do not give to the world, you lose. If I keep my knowledge, I lose it. (...) One receives knowledge and gives it. When you give knowledge, you enrich yourself. If you do not give love, you are detracting from yourself. If I begin to help people, if I begin to heal people, I begin to heal. Do you understand? To be a therapist, you have to be a patient. The first thing to do to heal yourself is to heal others. I have one more saying: "I do not want anything for myself that I do not want for others".

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 124.

18 September 2009 https://twitter.com/gtdguy/status/4084592042
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27 June 2011 https://twitter.com/gtdguy/status/85187098725974016
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Variant: Your attention will continue to be grabbed by anything until you give it the appropriate attention.

Source: Maximize the Moment: God's Action Plan For Your Life