The classical mettā practice in Visuddhimagga IX.1-76 (Buddhaghosa, 5th c. CE) teaches a four-category sequence: self → benefactor → neutral person → enemy, with the dear friend as a transition stage. Sharon Salzberg modernized this into the five-phase format taught throughout modern Western mettā curricula, self, benefactor, friend, neutral, difficult, in Lovingkindness (1995), and added an outward-extension phase that gathers the practice into universal goodwill. This essay groups the five Salzberg phases into four broader movements: phase one is mettā for yourself; phase two is mettā for a benefactor, someone whose love for you is uncomplicated; phase three is mettā for a friend, then a neutral person, then a difficult person; phase four is mettā extended to all beings. The practice that breaks cynics open over time, and the practice most modern readers want to skip, is phase three's difficult-person stage. This essay is about how to do it, when not to, and why the texts agree it is hard work.
What mettā actually is
Mettā is the first of the four brahmavihārās, the divine abodes, that Buddhaghosa systematized in Visuddhimagga IX. The English translation "loving-kindness" is fine but soft. The Pali itself is closer to active goodwill, a deliberate wish for the well-being of another, repeated until it stabilizes. The canonical phrases from the Karaṇīya Mettā Sutta (Sn 1.8) are simple: may you be safe, may you be happy, may you be healthy, may you be at ease. The practice is to direct those phrases at one being at a time. It is not a feeling-state. It is an intention-practice. Sharon Salzberg writes in Lovingkindness (1995) that the feeling-state may or may not arise, and the practice does not require it. The intention is the practice. The feeling is the bonus.
The four phases, briefly
Phase one is the self. Most Western practitioners find this the hardest phase, directing the wish for safety, happiness, health, and ease at yourself feels unfamiliar, even fraudulent. The classical instruction is to do it anyway. Sit with the phrases turned inward until they stop sounding like someone else's words. Phase two is the benefactor, a grandmother, a teacher, a friend whose presence in your life has been unambiguously good. The practice flows easily here. Phase three is the friend, then a neutral person (the barista, the mail carrier, someone whose face you know but whose interior you do not), then the difficult person. Phase four is universal, mettā extended outward in widening circles until it includes all beings, named and unnamed.
The difficult-person phase
Here is where the practice asks something it has not asked before. The difficult person is the one whose name you do not want to say out loud. The ex-partner who left, or who you left badly. The parent whose distance shaped you. The colleague whose ambition cost you a position. The friend whose betrayal you have not yet metabolized. The classical instruction is to bring the difficult person to mind, the actual face, the actual situation, and direct the four phrases at them. May you be safe. May you be happy. May you be healthy. May you be at ease. You will resist. You will mean none of it. The instruction continues anyway. Sit with the phrases turned outward, at the face you do not want to think about, until you can say them without flinching. That may take weeks. Sit anyway. This is hard work.
Why does this work? The texts agree on two reasons. The first is that resentment is a closed loop, a rehearsal of the wound that keeps the wound active. The mettā phrases interrupt the loop. They do not deny the harm; they introduce a counter-current. The second is more uncomfortable. Sharon Salzberg writes that the mettā practice eventually reveals that the difficult person is not so different from you. They are also a being who wants safety, happiness, health, and ease. They have failed to find those things; that is partly why they hurt you. The recognition does not excuse the harm. It contextualizes it. The classical Buddhist frame is that all beings are suffering, and the practice is to widen the circle of compassion until it includes even the ones who have suffered onto you.
The Tibetan variant: tonglen
Pema Chödrön teaches a more advanced version called tonglen, "sending and receiving", in The Wisdom of No Escape (1991) and Start Where You Are (1994). The practice is structurally inverse: on the inbreath, you take in the difficult person's suffering as a thick, dark smoke; on the outbreath, you send out clarity, openness, and well-being. Tonglen is harder than basic mettā and should not be attempted until phases one and two of the Visuddhimagga sequence are stable. For most readers, basic mettā done at the difficult-person stage for several months is the practice. Tonglen is the practice for after.
Forgiveness is not the goal
Modern Western practitioners sometimes conflate mettā with forgiveness. The texts do not. Mettā is the wish for the well-being of another being. It is compatible with the recognition that what they did was harmful, that the relationship is over, that you will not see them again, that they may never apologize. Forgiveness, in the modern psychotherapeutic frame, is something else, a decision about your own relationship to what happened, often with no contact with the person at all. Mettā can support forgiveness, but the practice does not require it, and the texts agree that the wish for another's well-being can coexist with the boundary that says: not in my life, not in my home, not in my proximity. The practice is for the mind that holds the resentment. The boundary is for the safety that holds the body.
How to begin
Start with phase one, mettā for yourself. Ten minutes a day. Do not begin with the difficult person; the canonical structure exists for a reason. After two weeks of stable self-mettā, add phase two: the benefactor. Another two weeks. Then the friend, then the neutral person. Only after six to eight weeks of stable progression through the easier phases do you bring the difficult person to mind. Sharon Salzberg's curriculum at the Insight Meditation Society follows this sequence; I follow it in my own teaching. The practice that breaks cynics open over time is the difficult-person phase, and the reason it breaks them open is that they have done the earlier phases first. Restless and bored in the sit? That is the sit. Difficult and resisting in the difficult-person phase? Also the sit. The practice is not the goal; you are.
“The boundary-line of metta cannot be broken. It is the truest thing in us. The practice is to remember.”