This is a practice that we include during some of our sangha meetings.
During Nei Quan we ask ourselves the questions:
1: What have I received?
(this may be within a period of time, say, this week, and it may be general or specifically from a person we have in mind).
2: What have I given others?
(again, this would be the person specified in 1, of generally)
3: What difficulties have I caused?
(specifically to that person or generally, through being alive, for example)
We then follow this with Chih Quan - offering ourselves, in all our imperfection, to the Buddhas
Here is an essay David Brazier (Dharmavidya) wrote following being asked about the practice:
INSTRUCTIONS IN NEI QUAN AND CHIH QUAN