How do you practise loving-kindness or metta meditation?

Sit comfortably, bring one specific person to mind, and offer them a short set of wishes, repeating each one slowly. Traditionally you work outward through five circles: yourself, someone easy to love, a neutral person, a difficult person, and all beings. Ten to fifteen minutes covers two or three circles without rushing. Each circle asks for something different, so treat them as separate skills rather than one exercise repeated at five targets. If a circle stalls, move to the next one and come back another day rather than forcing it.