There are no limits on true self-giving. It is not just to those one likes that one makes the offering. This involves a love that issues from the very CENTER of the person's being, directed to the CENTER of the other person's being, a love that gives ALL that the person is in order to foster the other person's life, a love that is offered to EVERYONE, without exception and without condition. The love is not offered to people because they are one's friends; people become "friends" because one loves them.
It is not enough to seek and care; to pay lip service to all manner of ideals. Real witness is what counts. It is something to do with leaps in the dark. Recognizing that Truth is hidden. But transformation towards truth is something else. It is practice and diligence.