The existential approach to therapy has a philosophical basis; it is an approach that tries to avoid preconceptions and prejudice in favour of attempting to understand & describe the individual and unique world of the client.

Indeed, it is an approach that does not necessarily try to facilitate change - though change often occurs - but rather works towards helping you come to terms with life and all its contradictions. The existential approach eschews a formalised technique of therapy, preferring to focus on one that is open and questioning of your individual circumstance.

For a background to some aspects of existential psychotherapy you may be interested in the following link:
A short description to the background of existential psychotherapy

For more general information regarding psychotherapy and counselling, both the websites of the United Kingdom Council for Psychotherapists (UKCP) and the British Association for Counselling and Psychotherapy (BACP) may be useful.