As a bias my approach is Gestalt in practice and flavour, and I place a heavy emphasis on the group dynamics of the relationship at work within and between people.
The individual is formed from the group during development. The social world informs and creates the individual. The group is the social mirror, where the individual can begin to surface established patterns of interaction and by active testing and feedback, re-learn new ways of being and doing. The facilitation of quality feedback and interaction from peers is the glue that offers the space to continue your personal development journey.