This paper will discuss the contributions to existential psychology, which has been a motivating force in the merging of philosophy and psychological theory. By showing the influence of R.D. Laing, Rollo May, and Viktor Frankl, we can see how this style of psychology was made, and why it was slowly becoming a 'school' of thought. Some of the theories of these men will be sited to show their influences, and how they came into the idea of existential psychology.