It is an approach inspired by the work of Carl Rogers who looked at the sufficient factors that cause the growth of the client in the therapeutic encounter finding that change occurs when the client is presented with empathy, congruence and unconditional positive regard in the therapeutic relationship. Originally described as non-directive, this therapy moved away from the idea that the therapist was the expert and towards a theory that trusted the innate tendency (known as the actualising tendency) of human beings to find fulfilment of their personal potentials. An important part of this theory is that in a particular psychological environment, the fulfilment of personal potentials includes sociability, the need to be with other human beings and a desire to know and be known by other people. It also includes being open to experience, being trusting and trustworthy, being curious about the world, being creative and compassionate.